if you do not have a intel-based mac, VMware Fusion and Parallels Desktop and boot camp will not run. They require an intel-based mac.
An application called Darwine is a work in progress, to port WINE to OSX/ppc macs. The last time I used it, i found that it would work excellently, although it was a little tricky to set up at first.
You can find info and downloads here:
http://darwine.sourceforge.net/