Microsoft began supporting Windows 7 in SCCM with SP2, so there has been the option to limit execution of DCM or package/program on a computer running Win7. SCCM has the ability to limit execution based upon an OS + Architecture + SP level. For example, you could limit execution to just Vista x86 RTM by selecting the following option.
Now that SP1 for Win7 has been released (to MSDN/TechNet/MVLS), you may find yourself in a position of needing to prevent a DCM or package from running on computers with SP1. Unlike with other operating systems, SCCM SP2 doesn’t have an option to limit execution to “x86 Windows 7 original release”.
To work around this, I found (for both DCM and package/programs) that selecting option “x86 Windows 7″ will detect Win7 SP1 as not being applicable….and it works in my brief tests!