If you're looking for painless, Virtual PC 2007 works, and will run on both the platforms you mention. Free, and I've yet to find a DOS pgm it won't run, even though it claims it does'nt support DOS; when you get a warning just click "OK" and keep going. Jack --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .