Need to find the following feature in reg db Tools->Options->Drawing-> Auto update drawings on load Thought it would be under [HKEY_CURRENT_USER\Software\SolidWorks\SolidWorks 2007\Drawings] but that dosnt seem to be the case could also use a link to compare 2 text files to eachother and then goto the differenreces, then I could find it in that way (also in case it is more than 1 string value that changes with this selection.