Here's a good article about preventing dust when using a digital SLR. If you're plagued by dust, read this!
Six Steps to Banish Dust from Your Digital Images
Written by Stanley Leary
Monday, 31 December 2007
"Dust has been a source of frustration for digital SLR users from the beginning. Those little specks are like blood clots in the digital workflow -- slowing you down or even ruining your best work. Sure, you can remove imperfections in Photoshop, but when those specks get on your sensor, every single photo will need to be fixed until the problem is addressed.
"You're much better off preparing on the front end, aren't you? Here are six steps to ensure a dust-free photo shoot..."
Read the entire article.