Pixlr - Free & Online
A team favorite, Pixlr is a free, online image editor. No download required. Just upload, edit and save. They offer a more in-depth tool as well as an Express version.
Adobe Photoshop Elements - Low Cost Download
Adobe's Photoshop is top of the line software. Photoshop Elements is their scaled down version, and can easily handle the needs of most Cascade users. In fact, for many, it's more than you'll need. But, if you'd prefer to purchase software for editing your photos, IT offers Photoshop Elements for Windows at a significantly reduced price - about $40 for college-owned computers.
(No software warranty implied.)