Thanks for the effort to explain, really i appriciate it.

A couple of things, i have several interfaces relating to ipv6 and i don't really know wich one does what, or why one of them is disconnected.
Idx Met MTU State Name
--- ---- ----- ------------ -----
7 2 1280 Disconnected Teredo Tunneling Pseudo-Interface
6 0 1500 Connected Intel 100mbit LAN
5 0 1500 Connected VMware Network Adapter VMnet1
4 0 1500 Connected VMware Network Adapter VMnet8
3 1 1280 Connected 6to4 Pseudo-Interface
2 1 1280 Connected Automatic Tunneling Pseudo-Interface
1 0 1500 Connected Loopback Pseudo-Interface
However, i just picked one out of the bunch and it worked (i think) it changed my ip adress to the one i wanted. I tried the "Automatic Tunneling Pseudo-Interface".
One thing that seems to not work is to reverse lookup my ipv6 adress, using this link everything seems to be exactly right
http://tinyurl.com/6cralc Should it not be possible to just do a nslookup 2001:0470:1f15:00af::2 in winxp? Im pretty sure this worked just a day or two ago, at least the /dns command from mirc did a correct lookup.
Another thing, does these settings get wiped at reboot? Seems like ipv6 stops working when rebooting.