I did exactly the same thing, then realised the difficulty is still too high for NMC, so I switched to Slush's pool.

I would have gone to Deepbit, but that email they are supposed to send when activating/recovering an account, just won't come through, so I gave up.

It does look like more people are going over to NMC. I'll wait till the decrease in difficulty.

NMC mining batch files at the ready