SEP 11 MR4 will work and also you can try SAV 10.1 corporate edition for windows vista, but you will not get support from symantec as it has stopped giving support with version 10.1. You can very well go for SEP 11 MR4, as i am also using the prduct and also Windows 7, i have been using it from the beta release of windows 7 and now going through with the RC one, still now i didnt face any problem with my A/V product (SEP 11 MR4). Cheers symantec team.....