Linksys WRTP54G & FC4 Problem

[veejay]

The problem: I just put in a Linksys WRTP54G (replacing an RT31P2). There are three machines sharing the connection:
Windows XP w/wireless card
Windows 98 w/cable
FC4 w/cable

The Windows machine get a great connection, but the FC4 is slower than dial up. I set up the machine where I work, and the connectivity is fine, so the problem isn't the machine. Also, I did check, but there aren't any firmware upgrades for the router.

Thanks so much for any help.