CGMiner is awesome.
Here's the commandline I use if it can be of any help. It connects to Burnside's pool and adjusts fan speed to keep the GPU temp around 75C.
cgminer.exe -o http://ltc.kattare.com:9332 -u workername -p password --scrypt --shaders 1024 --intensity 12 --auto-fan --gpu-fan 30-75 --temp-target 75 --temp-hysteresis 1
The shaders parameter depends on your GPU. Adjust it according to this (comes straight from the scrypt-readme file that comes with cgminer):
GPU Shaders
7750 512
7770 640
7850 1024
7870 1280
7950 1792
7970 2048
6850 960
6870 1120
6950 1408
6970 1536
6990 3072
6570 480
6670 480
6790 800
6450 160
5670 400
5750 720
5770 800
5830 1120
5850 1440
5870 1600
5970 3200