SOLVED IT! Its the stupid newest ATI driver version, 8.6. I reinstalled 8.4 and it works like i expected it should. Stupid ATI! So if anyone else is having similar problems with ATI cards, install catalyst 8.4.

I tried putting my old x1950 back in and have the same problem as with the 3870 now! Even did a clean boot and same problem again. I decided its Win XP SP3 that disables all ati face selection in SU, i found some other posts online from people with similar issues after updating to SP3. Stupid Microsoft!

Great, thanks for the information, greatly appreciated!

anyone?

yeh i know those work well but i wanted to know if the 9800s worked too

ok thanks, does anyone know how well the nvidea 9800 Gx2 cards work with sketchup?

reason i ask is i'm considering getting a FireGL V5600 512mb card and wondered if anyone knew if they worked with sketchup?

What graphics cards are people using with sketchup? i had a ati x1950 pro which worked but didn't have any opengl settings. i recently upgraded to a hd 3870 which didn't work at all with SU and wouldn't allow me to select any faces no matter what settings were on/off.

nope none. i just reinstalled su and still no luck.

i found the 'opengl settings' but only had 2 tick boxes, triple buffering and force z-buffer depth. i tried both and still no joy.