sqdge,
Were you able to get purgos installed?
As for repackaging, no, but most programs are msi based even if they are compressed in some .exe so you can get them out, and if they are exe based typically they have /q or /s option to install the silently.
As for the bulk registry updates not yet, but you could push out a .reg file and run regedit /s RegEntries.reg to acomplish that task.
SofTulz.Net