skip the config file and just run a command line. Find cgminer.exe and right click and make a shortcut on your desk top. Right click on the new shortcut and go to properties. From there you will see an area called Target. Add this at the end of your cgminer.exe

You will need to change the thread concurrency to the one that's for your GPU. Also the username.

 cgminer.exe -o stratum+tcp://coinotron.com:3334 -u y2bne1.5870L -p 12345 --scrypt --auto-fan --gpu-fan 25-100 --temp-target 59  --thread-concurrency 8192 -I 18 -w 256

This is a great post that helped me alot!
https://bitcointalk.org/index.php?topic=117221.0