bballboy,
I'm still fairly new to DSLR and post processing images. Here is where I started and where I am today.
Google Picasa - Free software for the download. Great for organizing/sharing your images. Very basic image processing available like crop, fill light, sharpen, saturate, etc. Pretty basic and does a good job with snaps of family and friends. The latest version allows you to connect to a more robust online version.
Canon DPP software - came with your Canon camera, if that's what you shoot with. RAW editor provides RAW file converter and better manipulation of files and a bit finer processing than something like Picasa allows. I used this to process football / basketball shots last year and it worked great. It also allows to do the same thing to multiple files at the same time. Definite time saver when you have 100 basketball shots to process.
PSE7 - comes with Adobe Camera Raw editor. Now, I can do basic RAW file editing and pull into PSE7 for further editing and finishing of images. This is where I'm at today ... nowhere near where I NEED to be, but learning more and producing better finished images.
Next stop - Full version of Photoshop and a new computer!
dave