I posted this on the group on the SW site , but no joy! We are using Windows XP pro, when I am opening a file in SW and decide to veiw only parts or assemblies or drawings, by changing the file type veiw, it takes an age for the files to appear. the quick way to refresh the window is move back a directory and back in again, and hey presto, the files are visable. This did not happen on Win NT and does not happen in any other programs, such as office products and autocad. thought i would ask here before i have the normal argument with my VAR, where they tell me its not solidworks, its windows. Thanks in anticipation Graeme Robinson