After some searches I came up with the following.  Getting about 360Kh/s.  Diff still shows 12.5M.  Is that bad?

cgminer -o http://p2pool.org:9377 -u user -p pass --scrypt --intensity 15 -g 1 -w 256 --thread-concurrency 8192 --gpu-engine 1000 --gpu-memclock 1350