How to uninstall current beta and go back to last WIP?

How do I uninstall current beta and go back to last WIP?
Thanks for any help.
RM

I guess this is no longer necessary after Rhino Beta can't print to pdf generic error in gdi ?

Yep Steve quickly posted that link and I’m back using the beta. Also I forgot I had V6 installed I was able to print from there as well.
Thanks for the quick help.
RM