KingKole
For under $400 there are plenty. One place to start is
www.stevesdigicams.com
They review cameras in price range and megipixels. Its a starting place. Find one or two or three that you like and go shopping via the internet for a good price.
I started with a 2 megipixel and that was great, especially for posting on the computer. I just got a 5 megipixel and that was because I want to print out larger pictures (11 X 14) But again, for e-mailing and posting pictures here 2 megipixel is great.