you type the custom res, and it wont work?
But take a look at the pic I posted, that is dx10. Don't think the dx9 stuff looks as nice. The steam forum guide is a bit outdated also. If you look at the last post, the author admits he must update his post. But will do so in 5 months. lol.
One thing I can't seem to get sorted is the sound, it is very crackle-y and sounds terrible, its ruining it for me at the moment.
Anyone else had any sound issues?