I'm not sure. I know that there are game engines that will load q2 models, but you seem to be asking for it to load all the separate parts of the Q2 player model (that's the body and weapon in q2, it's not split into arms, legs etc, right?) and use them correctly...
I imagine it's possible to do without QC coding, but you're probably looking at an engine/qc combo to get the job done, especially to get the frames right.
I've not heard of such an engine. Try posting to these sites' forums, you should get some help there (maybe it's already made).
Inside3D
http://forums.inside3d.com
Quake Standards Group
http://www.quakesrc.org/
Hope that helps.