E Walker , Apr 02, 2006; 07:23 p.m.
1)Turn camera on
2)Press 'Menu' on back
3)Turn the big wheel on the back two clicks counter-clockwise... you should be in a yellow menu, second option from the end of the list- this is the 'Sensor Clean' option
4)Press the button in the middle of the big button on the back... you'll get a window that tells you to turn the camera off after cleaning... hit 'Yes' or whatever it says to do...
5) Remove your lens and clean away! Be careful, and make sure you know the dangers involved before you start! If you damage your sensor, there's nothing left to do but replace it! Good luck! (Still too afraid to clean mine, but I have opened it up and inspected it several times now)