I also use VMFusion and, over the past six months have had no problems with it - you need a vm if you are fairly continuously switching from one os to another, moving between apps you have on the pc and those under os x. I do that all the time. On the other hand, if you don't work in this way and simply want to use pc software occasionally then the cheapest solution is to use Boot Camp. Of course, it's also cheap to use Virtual Box, which is free, but I have no experience of it. As another member said, VMFusion is right up to date with 10.6.1 support.