It's proof-of-stake + scrypt based coin. Originally it was forked from PPCoin, but for now the development went in own way.
There are not so many differences for LTC miner, except for 520 confirmations required for immature coins.
Other differences:
- 10 minute block targets;
- Minimum PoS difficulty is 0.001, minimum PoW difficulty identical to TBX/FBX/LTC/whatever;
- Difficulty retarget performed every new block
If you have enough hash rate, I recommend you to use p2pool. You can find simple guide for the windows users here:
https://bitcointalk.org/index.php?topic=143221.msg1769236#msg1769236Also you can ask your questions in this topic.