Wireless router problems

first install wifi drivers for your motherboard with the latest version
then see if your router is configured properly as your ISP did initially
if all these are ok then connect there should not be any problem

Have you change settings on your router? if not try to disconnect and reconnect your dell computer. if still not working. turn off both laptop, turn off the router and modem. wait for 10-20 seconds then turn on the modem first, and if the modem is stable, turn on the router, and if it is stable, turn on the dell computer and try to connect. If still fails, try to delete wireless profile adn recreate it. If still fails, check device manger if there is a problem in your wireless driver. If still cannot connect, perform system restore.

First of all make sure you have the most up to date driver for your wireless card from the manifacturer..

Are you trying to connect to the wireless network on the laptop ?
It is very simple.
first you will need to make sure that you have all the wireless settings of the network.
Click Here for more info about wireless network connections

have you configured your router yest

Please try using Wireless 'G' mode only in the router. Also, try using 'TKIP' and not TKIP+AES for encryption.

Please rate this solution, if it works for you.

There is no switch on an Inspiron 2200. I would go to Dell's website and download the drivers for your model # and then uninstall the existing adapter. then try installing the new driver and let me know what happens.

on your inspiron 2200...
1) click "start", "run", and type "services.msc"
2) select "wireless zero" at the bottom and check if it set to "automatic"
3) make sure that "wireless zero" is set to "start"
4) turn on inspiron 2200 wireless switch
5) right click wireless icon near to your computer's system time
6) click "view available wireless networks"
7) check if your wireless name is visible

So u can connect to the router, but you arent allowet to access the internet?
The router gave your dell a new ip-number, but it dident gave you access to the net. You ned to do the settings in your router manual, let the router give your dell full access.

Good luck

What operating system do you have running on the Dell? Is there a hardware/software firewall setup/installed?