So you want to try to mine more altcoins with your mining setup?
You have nvidia cards and want to get the most out of it?
Stop mining Litecoins! it's not profitable enough!! the difficulty increase makes it harder to mine so it's isn't worth it anymore
You can calculate mining revenues based on hashrate for different coins and mine the most profitable coins
Here's a few link to help you out:
http://dustcoin.com/mining Basic one, with only a few coins. **
http://www.coinchoose.com/ a lot of coins, lots of info (network hashrate,difficulty, etc) ****
http://www.coinwarz.com/cryptocurrency Awesome!, profit calculator,graphs etc. *****
With those site you'll be able to choose different coins and make more money with your mining setup!
If you want to mine the most profitable coins but without managing manually, you can create an account at
https://www.multipool.us for automatic coins switching.
Then you'll need a good exchange to convert those coins to Bitcoins:
https://www.cryptsy.com/ is a good exchange, with a lot of coins listed.