Lars Schmid , May 11, 2007; 01:03 p.m.
There is a company called sensor swap, they offer special liquid and brushes to clean your CMOS. I have never actually had to use them but I know a few people who are quite happy with their products. There is also a cheaper competitor called Digi-Pad which might be ok. Just search on google for them. And if you want to do it completely yourself with a make-up brush have a look at this link: (link)