solidworks 2006 and win 7

In my Collège, I have Win 7 pro on many computers, I try to install the only version of solidworks I have : 2006

It works perfectly when I am on admin session, but when I try to use it in domain session, nothing it's possible...

What can I do ? what sort of key must be modified in database register ??

(I' m french, in a little collège with 150 student and I prefer since solidworks 2010 that I try, using the 2006 version that is light, and so simply for children's)

(sorry for my english...)

SolidworksAdministration