Linksys WRT300N and Vista problems on my laptop

Hello, I just bought a laptop and I've been having a lot of trouble getting the internet set up with it. At first everything worked just fine, no problems what-so-ever. Now, my network wont even show up. I'm thinking it might be a problem with the router and windows vista, since my moms laptop has been having similar problems. I'm wondering if anyone has gotten this router to work with a laptop running Vista without problems, or is there some kind of known issue here? Or, are there any wi-fi gurus here that know how I would go about fixing this? I tried manually adding the network and tried changing the channels, but it had no effect. When i reset my router it seems to work for a very short while then it goes back to the same routine. I don't know too much about wireless internet, this is my first time dealing with it.

Thanks, Dave.

There aren't any known problems with this router and vista, so you may just have gotten a dud piece of hardware. Before you send it back though, try turning off all the security (WEP,WPA, WPA2 and MAC filtering) on the router and see if that works.

Sparks
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