Other avenues for coin generation?
Invest into an FPGA miner - that's the only way to be future-proof today.
Two machines each armed with a single nVidia card is a truly horrible set up, to the point of being laughable as anyone's idea of a mining rig.
You're burning up much more money than you'll ever earn unless the exchange rate skyrockets to $30, which isn't exactly the most likely of scenarios.
Don't mine on slush, the damned pool is not only hoppable but it's been exploited
for a very long time.
Find yourself a nice zero fee DGM or PPLNS pool and mine there. I've been very happy with BitMinter, Ozcoin and Eclipse. Those pools are rock solid.