What's wrong with PC Gamer? No 1152x864 resolution backdrop option, that's what.
I find people use 800x600, 1024x768 (lower spec machines), and 1152x864 as their desktop res [Unless they use 1600x1200 (high end spec)] but not 1280x1024 yet when given display options many people forget 1152x864, why?
Don't ask me, I'm using it too. Maybe because there are some gfx-cards out there that just dont support it. TNT
Not to mention there are some monitors that 1280x1024 is the max res..
Heh.. if I had my way, I'd be on a kick ass 28" screen with 1920x1600.. =)