Your guide Rocks thanks....
2 quick questions...
how do we tell them to mine at 850 ... do we just add it to the line like:
sudo ./cgminer --scrypt -o stratum+tcp://yourfavoritepool.com:3333 -u yourusername -p x -pll 850 ??
How do we turn off dual mode ( i am seeing 2 lights on them when they are mining)
thanks

Please just follow my guide as it would have prevented all of the errors you are encountering. Go through the guide in my signature step by step before reporting back more problems.