Virtual Tour Software free?

Is there any freeware programe that i can make a 360 Virtual Tour?
i have panoramic makers but its the Virtual Tour Software i'm really arfter!
thanks
ow and i wave windows vista and the photos will be taken on my nikon D90 so each photo will be 12mega pics and about 6mb in size!

Microsoft ICE can make panoramas, and 360 degree panoramas too. Best of all, it's free.http://research.microsoft.com/en-us/um/redmond/groups/ivm/ICE/

Once you have created it you can then upload your panorama to the Microsoft Photosynth website where it will make a virtual tour.