SolidWorks Crashes When Starting

I have been trying to install SolidWorks Vista 32 Bit SP2.1on a student's computer for the past few days with the same result.The program successfully installs, but when the student tries toopen it, Vista says the program has stopped responding and thencloses SolidWorks. I've tried installing a later service pack(SP4.0) but still have the same problem. Any thoughts as to asolution?SolidworksGeneral