Medieval 2 total war blood graphics

I got the game and I've played it for abotu two days. I was looking at some sites adn they had blod graphics on theirs..how can I get that onto my medoeval 2 total war game?

A site? Or do you change settings somewhere?
Also what are the mods??

theres an expansion pack for it, mabey that does it, im not sure though. and hows the game? I bought it but my computer doesn't have enough graphics to play it. man I was pissed