Netgear Wireless net problem

I have a Netgear wireless router - 54 Mbit, and then i have ADSL installed
and the internet works fine. Ive connected the whole thing like this:
Netgear wireless PCMCIA-netcard connects to the router and that works fine,
then i have connected the Netgear router to the ADSL box ofcourse in the
UPlink stick, and then i have connected my Desktop PC to the router with a
LAN cable which also works fine i can access the internet fine, BUT when i
try to go on the net with both computers it isnt possible. The internet
settings is "PPoe" (spelled wrong the other than DHCP), and i have to call
up and log on a network before accessing the internet but when one computer
is on the net i cant do this, please help. Ive tried some stuff:

Changed the ínternet settings on 1 off the computers to not to dial when a
connection is present, that didnt work.
Tried the automatic detect settings in LAN settings.

on my ISP's homepage they say that it should be possible to connect more
computers to the router, but what am i missing.

Thx Nichlas Holm Joergensen