This has been said many times around the forums but basically unless you're going to throw a few GHash at the problem (multiple boxes with multiple modern GPU's) solo mining is probably not going to be profitable.

UNLESS...

a) You don't care how long it takes you just want the 50BTC for pride reasons.
b) You are happy depending on luck, as really this is what you're going to be using...
c) Your power is included with your rent (or you live with your parents / in a college form, etc). Mining draws power and mining solo with low hash rate likely means you'll burn more power than you'll generate in BTC. At the very least any value in BTC you generated will be reduced by your input power costs.