Linksys WKUSB54GS cannot associate with access point problem

I just bought Linksys WKUSB54GS (Wireless-G USB Kit with SpeedBooster),
which includes

WUSB54GS 802.11g Wireless USB Network Adapter With Speedbooster
WRT54GS Wireless-G Broadband Router with SpeedBooster

I thought Linksys brand should be good router and adapter. However, it
always have error "cannot associate with the access point" or
"associates with access point, cannot find internet" error messages.

Do you have some ideas whats going on? Should I change another wireless
router? Any suggestions? or good wireless router/adapter?
please advise.

thanks!!

You may wish to investigate the Linksys Knowledge Base and Linksys Live
24-Hour Support Help Desk:

http://www.bradreese.com/cisco-tac-c...de.htm#LINKSYS

Sincerely,

Brad Reese
BradReese.Com Cisco Repair Service Experts
http://www.bradreese.com/index.htm#EXPERTS
1293 Hendersonville Road, Suite 17
Asheville, North Carolina USA 28803
USA & Canada: 877-549-2680
International: 828-277-7272