You can take it back, provided that you've got the original packaging and reciept. It is subject to a 15% restocking fee, though. But hey, it's better than having a camera that you can't use how you want to use it, right?
Do a search on the electronics page on Target for digital cameras that are between 3-5mp. A 3mp camera is fine if you're not planning on making 8x10's or bigger enlargements.
Anyway, again, stick to name brands and make sure they have an optical zoom, and a macro feature.
www.dpreview.com is a good website, check that out while you're at it.