Wii console...cursor doesnt appear on the screen but everything is sychronised and buttons on remotes work?

According to Nintendo it means your WiiConnect24 is not enabled.
"WiiConnect24 allows the console to receive downloads even when the console isn't in active use, as long as it has a working connection to the internet. The types of information that can be received include News and Weather, messages posted to the Wii Message Board, and any messages sent by Nintendo about new Wii console features."
Fix Problem: To Access the WiiConnect24 setting:

1. Access the Wii System Settings (How To Shown Below)
2. Move the cursor over the blue arrow on the right and and select it once to reach System Settings 2.
3. Choose "WiiConnect24.

How to Access the System Settings

1. With the Wii console properly connected, power on the console to reach the Wii Channel menu.
2. Use the Wii Remote to move the cursor over the "Wii" button in the bottom-left corner of the screen and press the A Button.
3. From the main Wii Menu and System Settings screen, use the Wii Remote to move the cursor over the "Wii Settings" option (wrench).
4. Press the A Button to enter the System Settings.

Hope This helps Giles102

you have to press the sync button on the console also

You should use the proper sensor bar and see if that makes a difference.

Make sure to the little blue light on the wii remote is on on the far left. You may have to sync it. Take the battery out of the wii remote and there is red sync button. There is another red sync button under the little flippy door on the front of the wii where the SD card slot is. press both buttons and wait for the wii remote to stop blinking. Then point it directly at the sensor.

make sure your sensor bar is connected to the console! properly aligned in the centre of t.v! also reconect the controler by: open the sd flap on front, press red button, remove batt cover of remote and press the connect button! this will resync the remote! also check battery's!

try to resync the remotes.

(1)
Verify that the cable bar sensor is plugged into the back of the Wii console and that the sensor bar is properly aligned with the centre of your TV screen.
(2)
Check that the Wii remote is synchronized with the console using the POWER button on the remote control to turn on the Wii console. (The POWER button is the white button with the red symbol which is located in the upper left corner on the Wii remote.) If it does not work, try to synchronize the remote control, then turn the console and controls that respond correctly to commands.
(3)
Verify that the distance between the Wii remote and the TV display to be between 1 and 3 meters, that there are sources of intense light that can interfere with the proper functioning of the remote (read Guidelines game for Wii for more information ) And that the sensor bar is placed correctly (see Setting up the sensor bar). Avoid the presence of sources of infrared light as electric stoves, gas propane or kerosene, candles, fireplaces, stoves or other heat sources close to the console.

If the steps described above do not solve the problem, the sensor bar could have a problem. Read the following instructions:

On each side of the sensor bar are five infrared lights that located the position of the Wii remote. If these lights do not work, the cursor on the remote will not appear on the screen and you can not step through screens of settings. To see these lights, you must look on the LCD screen of a digital camera or a mobile phone. Verify that the sensor bar is connected and that the Wii console is turned on, and then framing the bar sensor so that it appears on LCD camera or cellphone. If you see five infrared lights on each side, the sensor bar works. Maybe you'll need to slightly adjust the position / tilt the camera or the telephone, but is rather easy to see these lights on the LCD screen
;)

have you unoluged and plug it back in?
also make sure sensor bar is plugged in all the way,

replace the batteries, and or try a friends remote.

exchange it

Cursor not appearing
Please note that our experience shows that this troubleshooting is best performed using only one (1) Wii Remote at a time.

• Some games do not use the cursor feature of the Wii Remote; Make sure the game you are attempting to play uses the cursor by reading the game's instruction manual. You can also exit out of the game to return to the Channel Menu and use the Wii Remote to see the cursor. If the cursor still does not appear, continue with the steps below.


• Trying to use multiple Wii Remotes in the Mii Channel or Photo Channel? These Channels only allow the Wii Remote designated as "Player 1" to function.


• Verify that the Wii Remote's pointer lens is free of obstructions and contamination (stickers, heavy smudges, etc.). The pointer lens is the tinted rectangle at the end of the Wii Remote.


• Check the battery power level by turning off the Wii console, then opening the battery cover of the Wii Remote. Press and release the red "SYNC" button to check battery strength. The number of lights flashing indicates the Wii Remote's battery strength. Four flashing lights indicates full strength. Our experience has shown that as your battery strength decreases to one (1) or less lights flashing, the cursor may not appear. For troubleshooting, if possible, try using fresh batteries so that all four lights illuminate. For guidelines on using batteries, please click here. If after inserting brand new batteries, you are still seeing less than all four LEDs flash, then your Wii Remote will need to be repaired. Please click here for repair information.
  
  
• Is the Wii Remote properly synced?
  Press the POWER button on the Wii Remote to see if the Wii console powers on.
  • If it does, the Wii Remote is synced with the system. Please skip to the next section.
  • If the power doesn't come on, power on the system manually and try syncing the Wii Remote.
  • If the Wii Remote will not sync, there is likely a problem with the Wii Remote. Please click here for repair information.
  • If the Wii Remote will sync and the cursor still does not appear, try another Wii Remote if possible.
    • If at least one Wii Remote is working, there is likely a problem with the first Wii Remote and it will need to be repaired. Please click here for repair information.
    • If you have only one Wii Remote, or none that are working, please continue troubleshooting.


• Make sure that the Wii Remote is being used between 3' and 10' directly in front of the TV and that there are no bright light sources affecting the Wii Remote's operation (review Game Play Guidelines for more information), and that the Sensor Bar is placed properly (see Sensor Bar setup).
• Check the cord on the Sensor Bar for any frayed wires or kinks, and verify that the Sensor Bar is free of obstructions.
• Check the button functionality, and that the Sensor Bar is operating correctly, by accessing the Wii Main Menu. Use the "+" and "-" buttons to scroll side-to-side through the Wii Channel screens.
  • If you are able to scroll with the "+" and "-" buttons, but the cursor is not appearing, then there is likely a problem with the Sensor Bar. Please click here for additional Sensor Bar information.
  • If there is no response, there is likely a problem with the Wii Remote. Please click here for repair information.