I also had the similar problem in the beginning. What router are you using (make + model?)
Try upgrading the firmware for the router. Also try first stopping, then starting the Wireless Zero Configuration Utility in services. Important to stop it, not just to check its running.
Had my nc10 for about 5 days now and have had similar problem to original post. I didn’t have any troubles connecting, never had, it’s keeping the connection that’s been the problem. I’ve tried everything, 4 different drivers, any and all different combos of encryption, firewalls on and off, and my connection will last for anywhere from 10 seconds to 20 minutes, but then it falls off. Sometimes it’ll come back in a few seconds, sometimes if I “repair” it’ll start up,and sometimes I have to restart to get it giong… Needless to say, pain. big pain. But to make things even more weird, even if I use an external adapter it does the same thing. I’ve got two other computers in the house running vista(nc10-xp) and they work fine, always have, always will. What’s giong on? Any suggestions would be appreciated. There was a driver mentioned that worked for the original post, if he/she can let me know what that was I’ll try it(an older drive, I’ve tried one, but it didn’t work). I’ve got a version of vista upgrade that I’m thinking of trying, but I’m not sure if I should just send this back and get a new one or keep on going. Again, if anyone’s got any more ideas, let me know, that would be greatly appreciated. thanks