If I understand you correctly, you want to allow your N900 to use your PC's internet connection via BlueTooth... if that's the case, it is definitely possible -- I do this when I'm at work, and it works perfectly once you get it set up.


Read through this thread:

http://talk.maemo.org/showthread.php?t=37710

And see my post at the end of it here for vaguely step-by-step instructions:

http://talk.maemo.org/showpost.php?p...0&postcount=11

(I worked it out on a Mac, so some of that may or may not apply, but you should be able to get it working in Windows following the same general principles -- or post back if you're having difficulty and maybe I can help you through it)