Is M2M compatible to be installed twice in the same disk & directory?
i.e. Installed once under Windows XP 
and then again when working under Windows Vista 
.
OR does it only need to be installed once and remain fully functional from either OS? 
I remember reading somewhere that the M2M IDE does not use the registry, so does that mean it would only be a matter of creating shortcuts and desktop icons manually for the second used OS? 
i just ccopied it from one machene to the other, and it worked without installing,
but it resides in the same directory on the same disk (ie. c:\dev\m2m)
so i don’t know if it’l work if your disk is mounted on a diferent location on the other os.