Access Point Problem?

[badenglishihave]

K, I have a networking problem on my hands... heres my configuration

Cable Modem
|
Router
----------------
| |
PCs (wired LAN), and a Wireless D-Link 802.11a AP
|
My computer (D-Link 802.11a Wireless PCI Card) and my dads laptop


For some reason, I'm not able to access the internet and/or network through the wireless network and he is. I just recently added my PCI card and tried to connect, hes been using his laptop for a while now. I can see the AP using Netstumbler, and can "connect" to the network, but I am unable to access the internet or any computers. Any ideas on what the problem could be? BTW, there is no WEP enabled and I have Windows XP (all the other computers have Windows 2000). Any input is desired, thx!

 

[kwebb68]

Can you ping other IP's on the LAN?

 

[badenglishihave]

I actually already fixed it, the problem was that I had to set the default gateway to my router ip, thanks for the help tho.