What do i have to do to run AutoCAD r12 (32bit) in Window 7 (64 bit)? Went to Microsoft website the say goto HP, can"t find anything about AutoCAD at HP. I'm kinda lost. O.K. I'll admit that I'm a newbie at this!

I wouldn't recommend it.  Even if you do manage to get it to work sooner or later it will stop working altogether.What version of Windows did you get?  Home Premium or a different version?