Help! W32.nytemare removal???

My laptop is invected with this. I have searched the blogs/websites and can't seem to find any information on this. I am running Vista and have Norton installed. My "Live update" doesn't seem to work, and I have removed Norton and re-installed with the same result. I have also done the online free scan from Norton and states no virus.

 

Can anyone help me with info/tips/removal.

 

Jose