Re: Are Mac prog. compatible with IBM compatible hardware or visa versa?

Mark the quick answer is no, but the long answer is yes. 

To run software designed for one hardware platform on a diferent type of 
computer you need a piece of software called an 'emulator'. Emulator 
software creates a 'virtual machine' on your computer which pretends to be 
the computer the software was written for. Because the emulator relies on 
the hardware of your machine, you will never be able to emulate, say, a 
PowerMac on a 486PC but should easily be able to emulate a 486 on a 
PowerMac, that is to say which ever direction you want to go with the 
emulation (Mac on PC or PC on Mac), you will always need a more powerful 
computer than the one you are trying to emulate. To emulate a PC on a Mac 
you might want to look at some of the software links at  
http://www.emulation.net/windoze/index.html and for emulating a Mac on a 
PC try looking at 
http://www.uni-mainz.de/~bauec002/B2Main.html