.How to transfer a downloaded game from pc to

no different software save your games on your pc get new card then transfer the games

The DS Lite can only play DS games or Gameboy Advance games. You can't transfer any music or videos to the device.

Unfortunately, the DS (Or DS Lite) system does not support game downloads. You will need a DSi, DSi XL, or Nintendo 3DS.

Hi,
Just get downloaded at these links :
http://www.jehzlau-concepts.com/2007/01/nintendo-ds-lite-games-free-download.html
http://romeuy.com/handhelds/free-nintendo-ds-nds-lite-games-download

If you are talking about the games that you can download directly from Nintendo you cannot do that with the DS Lite only on the DSi

You can play multiplayer games with a Nintendo DS Lite even if you don’t possess a copy of the game. If one of your friends has a multiplayer game card, they can use their Nintendo DS Lite as a host for the game session and you can join the multiplayer game.
jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); });
Things You'll Need:

• Nintendo DS Lite

Using One Card to Host the Game
1. Step 1 Look on the game’s packaging for the "Multiplayer" icon. If the game requires only one player to have a copy of the game, the icon will show two DS Lites: a DS Lite with a black screen transmitting waves to a DS Lite with a white screen. Below the two DS Lites is a range of numbers which indicates how many players the game can support.
   
2. Step 2 Put the game card in the Nintendo DS Lite that is acting as the host for the multiplayer game session and start it up.
   
3. Step 3 Have the other players turn on their systems. They will use the main menu screen to access the "DS Download Play" icon. They need to tap the icon to begin downloading the game information from the host DS Lite.
   
4. Step 4 Begin playing when all of the systems have finished downloading the game information from the host.
   
Multiple Cards for Multiple Players
5. Step 1 Look at the "Multiplayer" icon. If every player in the game session needs a copy of the game in order to play, the icon will show two DS Lites, both with black screens, transmitting waves toward each other. A range of numbers is under this graphic and indicates how many people can play at one time.
   
6. Step 2 Read the game's instruction manual on how to set up the game session. The steps required vary by company and sometimes by title within the same company.
   

*reposted from ehow.com

Maybe you need to install drivers on your computer. 

That is fake, Why?because if you do some research in the net you will see a product there named "Nintendo DS Lite Charger cable" and if you open it you will see there that the product was previously named USB "TRANSFER" cable but now changed to USB "CHARGER" cable.

You need to get something like an M3 Real card which fits inside SLOT 1 of your DS (where the DS games go). The M3 card itself has a space for a micro SD card on which you will store the ROMS for the DS games you have on your PC. Note that downloading ROMS is ILLEGAL unless you have bought the original game. Hope this helps. I got my M3 Real from Deal Extreme - they are based in Hong Kong, but deliver promptly and have the best prices I have seen for the M3 Real.

First DS (system you are transferring the ID from)

1. Turn on any Nintendo WFC-compatible game and access the WFC Setup Utility. (Consult the game manual for the game you are playing for specific information.)
2. Tap "Options."
3. Tap "Transfer Nintendo WFC Configuration."
4. Tap "Ok", then tap "Ok" again.

Second DS (system you are transferring the ID to)

5. Remove all games from the DS you wish to transfer the settings to, then turn the system on.
6. On the DS's main menu, select "DS Download Play."
7. Select "Nintendo WFC Configuration Transfer."
8. Tap "Yes" when asked if you want to download the software. The word "Downloading..." will appear.

First DS

9. On the DS with Nintendo WFC configuration, tap "Ok" to confirm that you wish to transfer the configuration.

Second DS (system you are transferring the ID to)

• If there is an existing configuration on the new DS, tap "Ok" to confirm that you wish to overwrite the existing configuration.
• Once the transfer begins, it will take about half a minute.

Both DS Systems

10. Once the configuration has been transferred, tap "Ok" to save the changes and shut each system off.

All of the Friend Codes you had given or received on the previous Nintendo DS will now work in the Nintendo DS system you transferred the ID to.

I just copied that from nintendo.com's customer service for you... it's better than how I could explain it.