I have learnt that some XP programs can run without the XP Mode active
on the XP Pro/Ultimate
So that means they can also be run on the Home edition

Its the "Windows Virtual PC" Program that works the "Magic" Not the XP Mode.
Expect to see other Modes being tried out. XP is only the First
As of posting, looking for those that are "compatible" It is going to be Trial & error also doing some deep Googling , posting for information for a few months until everythings calmed down .
Looking further back, how will 7 Cope with even older Programs,from the Win 98/ME era? Somebodies bound to post a topic on that at any time in the near future