Well lets start with the basics....
first, what version of Solidworks?
Is this a new installation?
If not, have you uninstalled the former version prior to your installation?
If so, then did you clean the system registry?
If so then did you go and get rid of the solidworks directories on the c:/ drive as well?
Also, can you elaborate on the "drawing file is not recognized" statement you made? What does Solidworks tell you when you try to create a new drawing? Or are you trying to open someone elses?
PLease fill me in, I can help you
Regards,
Jon
jgbena@yahoo.com