Specifically, what is your car doing wrong?
Is it loose on corner entry, pushing on corner exit, traction rolling, etc...
As for setups, kinda surprised no one has chimed in, but these two setups are good places to start. You should also check with the people at your track.
http://www.teamassociated.com/pdf/ca...o_dhi_2006.pdf
http://www.teamassociated.com/pdf/ca...ekend_2005.pdf
The notable setup options are the 40wt shock oil, 2 degree caster hubs, Silver front springs, Green rear springs, front solid axle.