If you have access to a successful WF2 installation (e.g. on a friend's/co-worker's Windows XP machine) you can just copy the loadpoint directory from the successful installation to your Windows 7 machine.
The WF2 setup.exe program doesn't work because it checks for the OS and can't figure out Windows 7 (since WF2 was created before Windows was released).
Note that this only works on 32-bit versions of Windows 7, I have never been able to get WF2 to work on a 64-bit version of Windows 7.