Wireless laptop interferes with wired desktop

Just finished installing a WRT54GX4 router (after a 30 minute call to support). When the wireless laptop tries to connect to my WPA2 connection my wired desktop connection "blinks" or disconnects temporarily. The result is that my desktop connections returns and the wireless laptop is not able to stay connected. This must be a "sharing" problem with the IP addresses. Any suggestions on how to resolve this issue? Thanks

Firtst of all, I do not understand what you mean by "I can not access 192.168.1.1 setup on the laptop. I've tried using my WPA2 network name as the UserName and it's password and the default admin password is not working either."
When you access your router, you should be using a wired computer.
When you access 192.168.1.1 you should be using the router's login user name (if any) and login password. These have nothing to do with WPA2, the network name (= SSID), or the encryption password. Unless you gave your router a user name, it should be blank. Normally you only need the login password to enter the router setup pages. If you cannot enter your router, then sadly, it is time to reset your router to factory defaults, and setup the router again.
Your laptop is set to a fixed LAN IP address of 192.168.1.3. Is there some reason you are doing this? In most cases, you would want the laptop to obtain an IP address automatically from the router's DHCP server.
Do you have any other devices (computers, printers, etc) that are on your network. If so, what address are they using?
Also, I assume that the desktop's 192.168.1.100 was assigned from the router's DHCP server. Is this correct? If the desktop has been set to this as a fixed address, it is in violation of the Linksys rules for assigning fixed LAN IP addresses.
With Linksys routers, a fixed (static) LAN IP addresses must be assigned in the device that is using the address. So you need to enter the fixed address in the computer or printer, not in the router.
When using a Linksys router, any fixed LAN IP address must be outside the DHCP server range (typically 192.168.1.100 thru 192.168.1.149), and it cannot end in 0, 1, or 255.
Therefore any fixed LAN IP address would need to be in the range of
192.168.1.2 thru 192.168.1.99 or
192.168.1.150 thru 192.168.1.254
assuming you have not changed the default DHCP server range.
If you are running an unsecured wireless network, then your neighbor may have a wireless device with an illegal fixed LAN IP address. In this case, secure your wireless network.
Just because your router is new, do not assume that your firmware is up to date. Many routers sit on the shelf for months before you buy them. To find your firmware version, login to your router, and look in the upper right corner of the page. Your firmware version should be listed there. If not, go to the Status pages of the router.
Message Edited by toomanydonuts on 02-25-200710:58 PM

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Wireless laptop interferes with wired desktop

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