Xfire In-game and Ventrilo on Vista/Win7

inb4 tons of "ET should be ran as admin anyways", "Xfire sux" and "Trololol XP > all" replies

I experienced Ventrilo push-to-talk borkage if launching several games (including but not limited to ET) through Xfire on Windows Vista/7.

This can be noticed as the push-to-talk simply refusing to work at all, and this is caused by Xfire wanting to launch Enemy Territory as adminstrator, whereas I just want to run ET as user because it works just fine that way, and because of security reasons.