Well what I did was I downloaded Keygrip 2 from the site posted above.
Downloaded The Quake2 Demo...
Downloaded The Quake2 3.20 update..
Downloaded DP 1.51 for Quake2
http://www.fileplanet.com/13521/download/Paintball-II-v1.51Installed all of these to a specific location.
Recorded a demo in build 19.
Pointed Keygrip2 configurtions to the Quake2 version of DP.
Copied my demo from build 19 to the Quake 2 pball.
Loaded it up in keygrip. Deleted the first "print" in the blocklist, and it worked.
Theres probably an easier way, but I could not get it to function properly with the build 19 client.