Hey Baloo
Can you answer these questions.
Is the wireless network connection enabled in Network Connections?
Have you tried to repair the wireless connection in Network Connections?
Can you do an "ipconfig" on the machine and see if the access point is giving you out an IP address (Start » Run » type cmd then type ipconfig).
Can you dump the contents of the window out here?
Have you tried resetting all items in the network. PC cards, access points etc..?