Thanks for the update! Both descent3 and descent3.dynamic were successfully patched.
Works great and I can FINALLY play d3 online... (not like there's really anyone out there to play) I do have a stash of win98 pentiumIII boxes that may get used for a lanparty, though.
The dynamically linked binary ...

Been trying to patch descent3 and descent3.dynamic with d3-loki-checksum-patch.py.txt (renamed to not txt)
descent3.dynamic patches fine (or says it does) but doesn't launch when called, before or after being patched. just does this:
: /usr/local/games/descent3/descent3$ ./descent3.dynamic ...