dutchcowboy is definitely enthusiastic and knowledgeable! Just some other things to think about. If you don't have the budget to buy a better lens to start with some kit lenses are ok for shots that you don't expect to use at sizes not bigger than 11"x14". Keep in mind that prints will generally look better than on your computer screen.
Something mentioned earlier is that if you decide to shoot raw, which is kind of like the digital equivalent of a negative, you have more flexibility to make adjustments that can compensate for initial exposure mistakes. It take a bit more work though doing post processing with a suitable raw converter. Also the files tend to be bigger, so you need more storage and computing power.
It is easy to get lost in the specs, while dutchcowboy is a Canon fan, and I am a
Sony/Minolta fan, you will get good results with any of the major DSLR brands, providing you learn to use it right. It is really important you have a chance to handle the camera before you buy it. Even if you plan an on-line purchase, get yourself to a shop anyway. Take along a memory card and shoot a few photos so you can get an idea of what it is like. Also it helps to determine what kinds of photos you think you will take. Sports, portraits, and landscape photos all require different technique. This can also affect your lens selection - sports you will want a longer focal length but also a faster (larger lens opening) fstop. These are expensive lenses and heavy since more glass elements are needed for the design.
As I mentioned earlier,
Sony is bringing out 3 new models this year, the Alpha A230, A330 and A380. Keep an eye on the prices for the old models the A200, A300 and A350 as there could be some good clearance deals.
Live view is something that is useful in certain circumstances - I wouldn't consider it essential. Also be aware that certain types of live view have slow focus which limit it to photos of slow or static objects. The optical viewfinder is superior to live view at this time.
Another thing is be aware of the color reproduction from the different camera makers. You may prefer a certain "look".
So don't rush your decision, go out and actually handle the cameras, try to take some photos with them, and be sure you are comfortable using them.
Excusez moi. 
