I need help! cannot seem to set up a wireless network right [wmp54g] [wireless adapter]

Q: Well, it seems that the wireless adapter card setup correctly cause it detects my system and my neighbors and connects them because they do not encyrption WEP setup .

When I try to connect to me correct to ask for a key and I type it in when I set it up and NO GO! It does not mean that it is wrong it just never connects .

I have a WRT54G v2.2 router and a Linksys WMP54G PCI Adapter . well .

I set up the wirelss router on my main machine and followed their s

Compatible Wireless Desktop Adapter [compatible desktop] [wireless adapter]

Q: I try to set up a wireless home network and other than the basic I am lost. If I have a Buffalo WHR-HP-G54 Smart Router / Access Point, which desktop wireless adapter will work?

Does also need to Buffalo, or would it simply be 802.11g compatible with another brand? If any brand will work, anyone a suggestion for a reliable adapter?

Thanks