If you are having issues setting up a home network as I did with Win 7 you might want to try this guys solution. Worked a treat for me,For solution click here
I spent about 10 hours trying to get Microsoft Teredo Tunnelling to work as I did IPv6 but kept getting the same issue. It showed it was there and active yet nothing worked. I followed the instruction at that link, (A little involved) but the problem is fixed. I can now access my PC from the laptop and vice versa.
Just thought I would share this solution as there are countless hits on Google regarding this issue.
it really should not have be this hard with all the so called experts at MS and their flashy new Win7. Don't get me wrong, I really like the operating system but it just shouldn't have such basic bugs especially when the hype for Win 7 Pro is that it makes networking easy! If this is easy I would hate to see tough. And if you are a lucky one whose network set up without hassles I am just jealous but google the problem and see how many forums are full of this problem yet MS win7 forums it hardly raises a metion.