Halo. I'm using GSS 2.0.1 with Windows 2003 SP2 and no problems so far.
also I thought that windows 2003 R2 contain the SP1.
so I think windows 2003 -> windows 2003 SP1 > windows 2003 R2 > windows 2003 SP2
not sure whether there is windows 2003 R2 SP2.
I thought that windows 2003 SP2 should contain whaterver is in windows 2003 R2 + some more stuff.