Sorry MacMiga. I speed read your article (I was on a bit of a buzz having just ordered the case).
Actually my A1200 is in a PC tower along WITH my pc.
Its called a EZTower from eyetech and it involved quite a bit of "Cut & shutting". But even this wasn't a cheap alternative.
The main problem with mounting a A1200 Mobo is, as has been pointed out, the width. I dont think you can get a smart looking desktop that wide enough to take the mobo.... Maybe those old IBM cases might (But here not pretty) and you gotta be careful what tower you use as they put the psu halfway up them these days.
Anyway heres the link to the case I just ordered.
http://www.thermaltake.com/ The case is a "
Xaser" For our Antipodean friends.. If you hunt the the posts.. or ask him directly...
VortexAU posted some links to these very cases from your shores.