I went to a local camera store to help decide which camera I want. Along sidedeciding on a Canon XTi, The guy said it would have to get cleaned periodically...I've never heared of this before and they want $75 each time. Does the camera have to be cleaned? how often? couldn't I do it myself? how much should it cost? Thanks for the help oh and what exactly is being cleaned? and is there anything else like this? I am now worried about there being normal costly maintenance. What can you guys tell me about this?