ERROR!! cant start teewars!!

ok...i wanted to play teewars with a better graphic setting...so i toggled supported graphics and chose the best...i restarted teewars, and there were only pixel instead of the loading screen...i tried it a few times, then i clicked me through the pixel and i found the list with graphics...but i couldnt see which graphic i clicked...so i took one of the top...now i restarted teewars again and...screen error, no error of teewars...i think i took a 32bit graphic... so my screen cant show it... i cant go back to change the settings, i have to change it without going ingame...and i also deleted teewars and i download it again...always the same error..NOW: What can I do to go ingame or what can I do to change the graphic settings on standard??
please help me, i just wanted to play teewars in better graphics, and now i just wanna play it again!!! :'(
thx for your help!!!