Hello Bill,
(2) does Qimage version 2006.277 work with Windows 7 64 bits?
Possibly not, I'm not sure when Qimage became compatible with 64bit windows.
The best thing is to get the latest version (no cost to you of course)
(1) what's the best way to contact ddisoftware about a current registration number?
You need to fill out the web page form on tne Qimage web site - Support pages - here is the link.
http://www.ddisoftware.com/forms/code.htmlJust check that any replies are not "spammed" by your re-mail provider - a common problem I believe.
Terry