Whether or not it should or should not work, I will skip. The bigger issue is that Forms 6 is obsolete and never was certified for use on Windows 7. Even if this can be made to work, I expect that other issues will arise as a result of being on this platform.
Glad to hear you were able to get it working. As I mentioned, it should be considered that using old software on an Operating System where it was not intended can be risky or at minimum, unstable. Generally speaking I would not recommend doing this in a production environment without performing thorough testing first.