Execute CMD commands after install?

I have been putting together an addon that bundles Windows Vista Mail, Calendar, Movie Maker, Dreamscenes, Hold 'Em, and a few other extras. The problem is that I need to register some dll files after Windows install using the regsvr32 command, but I cannot figure out the [RunCMD] part of the tasks file (I read both tutorials on the subject and tried addonmaker), nor can I figure out how simply execute a cmd after install like I could with nlite and Windows XP. Without this neither Windows Movie Maker nor Windows Media Player toolbar will work.

Could someone help me with this?

Thanks. (Also, I intend to upload this to the community when I have it working.)

Edited March 12, 20159 yr by Enki40