Open Palm halo model

Hey guys, this wiki is probably long dead, but I'll give it a shot. I've found the models for the halo that appears over your head if you stand idle for 30 seconds (v_good_halo.mdl and v_good_halo.mdx) in the global-a.rim, but have no way of opening/editing the files... does anyone have any information at all? I heard 3ds max might import mdl files, but i have a feeling they're only for warcraft3 models... Cheers guys.