Hi Jack,
No, not without starting over with a clean install. Any upgrade to an NT
system is not reversible in this manner.
--
Best of Luck,
Rick Rogers, aka "Nutcase" - Microsoft MVP
http://mvp.support.microsoft.com/
Windows help -
www.rickrogers.org
My thoughts
http://rick-mvp.blogspot.com
"Jack" <Jack@discussions.microsoft.com> wrote in message
news:AF22E509-AF00-4BA6-8309-EC71046B693A@microsoft.com...
> Is it possible to upgrade your version of vista to a better version and
> then
> if you wanted to, downgrade back to the original version?