solidworks is unresponsive

solidworks is so slow to respond it opens unwanted files,unable to zoom in and zoom out with wheel, will not respond to ctrl1, 2, etc. to change position of part, when part is opened screenon solidworks goes black, can still see the toolbars and everythignbut the screen for the part is black until you grab at nothing andtry and rotate part then it appears same with zooming in and outthis is 09 new installation why does this happen everytimesolidworks is updated is it the computer because this sucks puttingme further behind than i was 2 days now i have fought with this iwish i had never upgraded 08 was finally working fine then comealong and put 09 on it and now solidworks runs like....nothing itdont run at all...SolidworksAdministration