How to Install Solidworks 2008 on a x64 Operating System
Open English_i386_Solidworks.MSI inside the Solidworks set up files. It should be in "Solidworks 2008 Office Premium SP 3.0 w COSMOSswwidata". Under "LaunchCondition", change the "Not" to an "Or" in the line that has a description saying "x64 operating systems are incompatible/not supported". Disable any anti-virus programs.