I now it's not "officially supported" but we have EG 4.1 installed on several Windows 7 machines and it has been running just fine. However, one user is complaining that his windows reset to the default each time he opens a new EG session, and it does not matter if he is double clicking on a SAS program or opening a program from Enterprise Guide. We have the latest patch applied (EG16). Also, try as I might, I can't seem to locate SGOptions.xml