Pretty sure this was it, but it's just a dx9 file in the KA directory so that wouldn't be impacting P99:
http://www.jiri-dvorak.cz/ka/#rendering
My XP is mostly patched - it popped up asking to install 92 updates so I'm guessing it was last used about a year before support for XP dropped. Not sure what patch level you're running, but if it helps I'm obviously not running the last patch bundle.
-Mcoy