All righty, here's the deal: Once upon a time, I had some computers set up on a network. One computer running XP Media Center upstairs, and a computer running 32-bit Vista Ultimate downstairs, as well as an xBox and a media server. All was good, and the internet ran fine. Then I got a new computer. This one was running 64-bit Vista Home Premium. Here's the quirk: When I try to plug it in to the wall jack (ie router) that I had my XP computer on, it can only see an Unidentified network but can not connect to that network. Ie no internet. But, I can plug my old XP computer into that same wall jack and everything works fine. I then carted the new computer downstairs, and plugged it directly into the router. Lo and behold, it works. I can get onto the internet, etc. However, this is not a feasible solution, as I need it upstairs, and I'd rather not run a 75-foot CAT cable across the floor and down the stairs. Also, if I unplug the cable from this computer from the router, and plug it directly into the modem, this apparently works as well (but precludes any of the other computers from accessing the internet and I lose the router firewall) I've researched as best I could, but to tell you the truth, network problems are just a l'il beyond my skill set. I'm implementing what simple fixes I can, but half the stuff I'm coming up with I don't understand. I'm hoping somebody out there knows a little more about network stuff. Fingers crossed that it's an easy-peasy solution. Let me know if there's other pertinent info that could be useful. And I... I'll continue trying to track down a solution I can understand and implement. Thanks.