I've checked some profitability calculators, but I'm not sure if I'm entering the right numbers. Am I correct in assuming I can use a BTC miner to mine LTC? If that's the case, a BTC miner that I see on craigslist with 450ghash for $150 would be a steal if I use it for LTC right? Or am I wrong, and a BTC miner can't be reused for LTC? I have an ASICMiner Block Erupter thing I was going to try, but it's only 333mhash.
Edit: seems I may have my answer. I did some research in to LTC miners, and found that most miners that do both, do BTC at much higher rates than LTC. So I'd guess that I can't use a BTC miner at 450 ghash to get as much LTC as I thought.