"page cannot be displayed" error every 1-2 mins -- Help

[pilla]

Hi,
I need some help .
Here is my setup.
I have COMCAST cable internet service and a RCA cable router.
This setup is connected to a Microsoft MN-500 wireless router.
I have a laptop (XP) and a desktop (windows 2000 server).
The desktop is directly connected to the MN500 thru a ethernet cable.
Laptop has a SMC Wireless cardbus adapter and this works fine.
encryption is set at 64bit.

Here is the problem with my desktop
Every 1-2 mins it can't connect to the internet meaning I try to access a webpage i get "The page cannot be displayed" message. I have to wait for another 1-2 mins before the internet starts working. This is so annoying.
I thought this is due to lack of memory so I put in another 128mb stick but did not make any diff.
I should state that this is an old P2/ 256mb/450mhz.

Earlier I used a USB Wireless adapter on the desktop and had the same problem. I thought this was due to the adapter so I returned it and plugged the desktop directly to the wireless router.
Any ideas on why this is happenning? is it something to do with the memory?
Thanks

[x586]

Extreemly unlikely it is a memory problem, like 1 in a billion chance.

It more likely a Tcp-ip problem. Open the properties for the nic's on the XP machine and the 2000 machine and compare the Tcp-ip settings.

Thats the 1st place to start.

[pilla]

Thanks for the reply X586
As you suggested I started playing with tcp/ip did not change values just fiddled and somehow the problem is fixed.
Thanks again.