Okay, let's try again.
What video card are you using ?

Open your windows command prompt (cmd)
Go to your poclbm directory
cd C:\Program_Files_(x86)\Bitcoin\poclbm
type
poclbm
You'll see the list of available OpenCL devices. Usually one is your CPU and other is GPU. It may be 0 or 1.
If your GPU device is number 1, then try
poclbm.exe -d1 --host=pit.deepbit.net --port=8332 --user=example@example.com --pass=password -v -w128
Those settings are best for ATI 5xxx series.