I finally got around to starting this game in my long queue of games I have in my library but haven't even opened yet, and my first reaction was "It looks like they didn't even update the graphics since Halo: Combat Evolved for Windows" (coincidentally, ported by Gearbox. Or published, one of the two). I mean, Microsoft went to all the trouble of making it "Vista-exclusive", but it seems they passed up the opportunity to make it a flagship title for DirectX 10 (which, admittedly, was released a year later, but still, if you're going to wait four years after the console release to put out the PC version AND lock it into your brand new OS, you should at least polish it up with your brand new proprietary APIs). At least they fixed widescreen monitor support.

Anyway, are there any tweaks or user-made texture/surface packs?