but you can install AdminStudio on a machine, share the repackager directory on the network. Now from your clean machine (which needs to be captured), access the shared repackager and run it. This should help if I can understand your problem correctly.
If you get a error launching Repackager from the clean machine (over the share), try this:
Search for the ISCommonHelper.dll (should be located in
\Common)
Create a copy of the file and place it in the Repackager folder
HTH