just try running it like this "cgminer -o [url to pool] -u [user] -p [password]
Thats the basic for it to start working, if you have problems there then you have something missing (openacl drivers or something like that).
cgminer then have a menu run by ncurses that just simply press G and you will me moved to the GPU menu where you can start playing around hehehe
following the line I commented before here are the options I usually use at night (low noise):
-w 256 -k phatk -I d --verbose --auto-fan --temp-target 77 --auto-gpu --gpu-engine 400-1000 --gpu-memclock 300 --gpu-fan 25-45
The options are quite straigh forward, the -I flag indicates dinamic intesity, this config is used over night to run with a slow fan so it tries to match the fan to 45% if the temperature raises from 77 it decreases the intensity and if it doesnt work in start decreasing the core frequency till 400.
If you have any problems running cgminer I will be glad to help you config it
remenber that when you oc the core you will probably need to increase also the GPU voltage that I couldnt get cgminer to do it. I use saphire trixx for the voltage only the rest is handled by cgminer.