HaloMods "Classic" Read-only Archive

And I can't figure out why! I've tried reinstalling several times (yes, legit copy) but every time I try to load The Maw level, the game freezes, or the one time it did load, I was dropped into this beige nothingness, but I could see my no-weapons reticle. I could also look around, but not move in a...

But the fact is (as I said) I DO have any and or all administrative rights! I'm thinking it may be a driver problem, but need actual feedback *ahem*

Everytime I exit Halo...actually, any fps I play at the moment, my display settings are at 640x480! When I try to change it, it tells me "The display control panel is unable to change the display settings. You may not have the appropriate administrative rights to change these settings." No...

But I'm not asking which one to get believe it or not...I'm looking for answers! I recently got an ATI Radeon 9550 256M AGP, replacing my also semi-new PowerColor Radeon 9250 256M AGP. Now, you'd think...being a 9550 and all, it would run better than the 9250....I only wish! After I installed the dr...