Wireless link dies when used with Sage

[dex1]

Hey Everybody,
I'm open to suggestions here. We have two clients, one wired and one 802.11a which have always worked, and still work, just fine.

I set up another machine a few weeks ago with 802.11a and it has had no problem hooking to the internet and also to the server machine which also hosts Sage. I was thinking of running a third sage client on that new machine so installed the trial version to see if the link speed would be good enough. It works just fine as long as i don't do anything else, but as soon as i start doing other things, like opening the 'my computer' folder, it kills the 802.11a connection to the point where i have to reboot the machine to get it back. (logging off, disable/enable, un-install/install of the wireless does not do it, only re-booting).

Any suggestions??