This may be an easy answer but I need to know if I can delete any of the Solidworks Download files from installations.  Right now I'm running 2010 SP3 so obviously I want to hold on to the download files for that service pack.  I also have the installation files for 2010 SP1 and 2010 SP2.1 on my computer.  Can I delete those without affecting the way its running right now?  Thanks.