Hello albatroz,
According to Jay there they can do that for you
![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
it's not real difficult though, if you're familiar with SSH and WHM they give excellent step by step instructions. At the time that I purchased it the cost was very reasonable but I have noticed that now it's much higher so unfortunately I am going to have to stop recommending it in the future. Not that it's not a great product, it has certainly done a great job for me just that they're asking a pretty good chunk of change for it now.
Jay, I have not seen much in the way of CPU usage myself but I also do not receive a LOT of spam either. I would be surprised to learn that it uses more than Spamassassin does though.