Ok, DarthMallwalker put me onto some nice freeware called JSummer that can do MD5, SHA-160 and SHA-256.

I'm upgrading the checksum of the DVDs to SHA-256.

Unless I hear from the 3 MIA QC'ers I'm not planning on making further changes.

Obviously only 2 of the original QC'ers will get replacement discs (both labeled version 2.0).
I do have a couple other volunteers for distribution so things should work out fine.

I'm cautiously optimistic that this project may be finished sometime this... um year.