Ok, glad you have seen the light!
The build I put together was a quick job mostly to convince you to build your own. I think we can do better with a little elbow grease.
The big thing I need to know is, do you want the best computer money can buy for $700 and under, or do you want the cheapest computer that will still do "task X". "Task X" could be play Steam games or run Microsoft office or email and internet or play crysis at highest settings.
Let me know this, and I'll put something together for ya!