WRT54G v.3 router problem HELP!

Hi i have a problem with my router.
The router is wired to my desktop computer and I have a laptop that uses the wireless signal.

The problem is, when I turn off the wireless signal from my laptop my router seems to be working fine on my desktop and I can go online and stuff. But the moment I turn the wireless signal back on, my router just disconnects and I can't access to any website.

I'm running on windows XP

Thank you very much!

Are you saying that you have internet access on the desktop system until you activate the laptop wireless, or that you have no wireless on the laptop at all?

Hi! I am also having problems with my router, and don't know what it is, it's the same router WRT54G v.3. I can't get connected wirelessly to internet. If I connect directly my computer and the modem I do get a connection.

Please help!

Thank you!