I am currently running 2009 SP03 on my machine. I happened to open the "Add or Remove Programs" application recently while trying to clean out some old programs. I noticed four entries for Solidworks in the list. 2008 SP05, 2009 SP0, 2009 SP02.1, 2009 SP03. Are all of these necessary? Could I remove all Solidworks entries that are not 2009 SP03? Are there important files found under the other entries that should not be removed? Any info would be appreciated. Thanks!