I guess the same way as with multiple python interpreters. E.g. under Linux/Mac OS X I might have python python2.5 python2.6 python2.7 and etc. Under Windows I

I guess the same way as with multiple python interpreters. E.g. under Linux/Mac OS X I might have python python2.5 python2.6 python2.7 and etc. Under Windows I have different locations for different python versions (e.g. c:\python26 c:\python27). You will simply have virtualenv, virtualenv2.6, virtualenv2.7.