I am thinking about buying a few scripts from you, however, I would like to ask a few questions first. This script the game reviews script. Is there anyway to get this ported over to vBulletin, or maybe even vBAdvanced CMPS Portal? If so do I need to make this conversion or could you? If you can how much would that set me back?

Also I wanted to ask the same questions about the classifieds module. just refer to the first part of this post same exact questions just about a different script.

No, that would not even be close to possible. It relies too much on the Mambo back end.