I always felt comfortable running Registry Mechanic on my XP machine however my new system is Windows 7 and I'm just a bit quezzy about running it on Windows 7 64-bit mode. I'd like to hear from others what your experience has been. Let me know.
I have been running RM9 on Windows7 64 and have not been experiencing any problems at all. It is doing quite a nice job at it too. You know that if you do have problems, there is always the restore feature.