Why Im always losing my connection?

Recently I installed a WiFi network at home. I have a desktop in the basement and a laptop at the second floor. My router is a Linksys 802.11B BEFW11S4 version 4 with the latest firmware installed. My laptop has a PCMCIA Intel PRO/Wireless 2011B card with the latest drivers.

My problem is that when I open my laptop and go on the internet my desktop and/or laptop lose connection. (Not very long, only 30-60 seconds and then the connection works again by itself, I don't have to touch anything... it just comes and goes..). However, when my desktop is the only one running I don't have any problem. (no lost of connection)

Do you have any idea what might be the problem?

Thank you in advance!

Yeah, you definitely want to turn off 802.1X authentication if your not using it, and very very few home based users would. You didn't specify if your desktop is wireless, only that is doesn't drop off when it's the only one connected. Is it also a wireless client. If so then you can pretty much trace it back to the laptop as the issue. I'd disable XP's zero configuration if your using it and use the cards proprietary utility if you can. That or go ahead and install SP2 RC1. I run it on most of my XP machine's now without issue. There is a very good uninstall if you do have problems however and it would solve the problem of disconnects if it is XP's WZC.

if it happens only once and in the begining you might consider yourself very "lucky", I have DLink 614 router (using as AP right now) and it disconnects whenever it pleased to do so and I as much as DLink's support or any body out there know nothing about the solution for it.

..this is very useful and helpful place for information...