slava,
Many thanks for your help so far, I understand your busy but just thought i'd pass this concept past you.
The below link is for a modified version of Debian 5 with the Xen Kernal
http://stacklet.com/downloads/images/debian/5.0
If i extracted the files from the image, and .tgz them up and uploaded to the correct dir, would the VDSManager be able to extract them and make them available to VPS's?
Last question, do you have PHP examples of the API in your documentation?
David