Yeah, probably not very good at OCing, but if you don't need that..it's solid.
Coolermaster Elite RC-330 ATX Blk Case 4X5.25 2X3.5 5X3.5INT No PS 1X120MM Rear Fan Front I/O Panel -- 30.69
Ok, ermm...Cheap ass case. A case is really personal choice. Just make sure it has good airflow.
This is the system that I am planning on builing. I'm sorry I didn't really tailor a system to your need specifically, but I am quite tired and just though I'd give you a starting point to work off of before I leave.
If you need any advice, and the others will probably give better advice, just give me a holler.
Edit: Just thought that I should mention that these prices are in USD($). They are not for newegg either, so they may not be the cheapest. This should probably run somewhere within your price range.