losing connection problem

Archived from groups: microsoft.public.windowsxp.general (More info?)

I'm having the following problem:

I have an office computer running XP Pro.
It constantly loses it's connection and reconnects.
It is hooked up to a D-Link router.
I've removed the computer from this network, and hooked it up at home, and
had no problems (connected through my own router) downloading and it stays
connected.
At the office, there is another computer running through the same router,
and it works fine. If I swap router ports, it still runs fine, and my problem
computer still loses its connection. I've replaced the cable connecting the
computer to the router, and still have the same problem.

I'm not sure where to look next...could it be a firewall issue?
Anything else??

TIA!
Amber