Nevo Studio 2.02 will install on Windows XP and Vista (32bit only)
Nevo Studio Pro 3.0 will install on all versions of windows from XP and up.
As Duct Tape said.
Nevo Studio 2.02 is ONLY for the SL.
Nevo Studio Pro is ONLY for the Q50 and S70.
If you have Windows 7 and you need to program a SL then here is what I have done.
Install Virtual Box (http://www.virtualbox.org/
Then Install WIndows XP.
Now install Nevo Studio on windows XP.
This works 100%*
The only thing I have not made work is the network settings, but I am sure this is just a simple fix.