New Vista computer. Installed SolidWorks 2008 SP4. Dell supplied McAfee Internet Security. SolidWorks worked fine. We are Nortons fans so uninstalled McAfee and installed NIS 08 & NSWB 08. Now the "rotates the model view" by pressing and holding the mouse wheel won't work in SolidWorks. Has anyone else experienced this? Symantec said that there should be no conflict between their product and SolidWorks. If no-one can help then I'll have to abandon Nortons and run with McAfee. I am using a Logitech wireless keyboard and mouse with up-to-date software.