Of course, since I only provide the images, you'll probably want to print some of them sometime.
Here's a few places I've used and been happy with:
CVS/Walgreens/Wal-Mart/Target/Ritz Camera, etc.: These guys are good so long as you don't need lots of prints. One, it can be a slow process to do more than 50 or so on their system in the store, and two, if you need more prints than that, someone else can certainly do it cheaper than 19 cents each.
That said, check their online sites for occasional sales that make them worthwhile to use.
For enlargements, I've found Costco to have great prices, but only if you're already a member. It's not worth the price to join _just_ to get enlargements.
Shutterfly.com: This is a place that will not only print your photos, but you can upload them and create an online album for people to visit for free. Their prices are only a little better than CVS, but they have many, many specials for free prints and enlargements. Heck, just joining gets you 50 4x6 and 1 11x14. You can also make photo gifts through them, including books!
Snapfish.com: Much like the other two, but can be half the price of CVS, 50 percent less than Kodak and Shutterfly and guarantees quality.
If you want to do some editing of your images, but don't want to spend much money, there are two programs I've used that are very effective.
The first has the really weird name of GIMP (GNU Image Manipulation Program), which is free for anyone to download who has Windows. This program is arguably as powerful as most versions of Photoshop. You can see more of what it does here.
Another one that has grown rapidly in use lately is Google Photo Editor, which is also an online editor favored by many people who use Flickr to store and show their photos online. (and if you haven't used Flickr, it's pretty nifty in of itself)
Lastly, GetPaint.net also allows you to manipulate your photos without buying any software.