I'm a 38 level Nord, and I'd like to create another character. As I'm too lazy to realize on my own, I'm just wondering if there's a mod/patch that allows you to play with 2 or more characters simultaneously, without replacing eachother's saves, or get too much ahead with my second character and not be able to find the first ones saves.

Thanks in advance.

Well, on the PS3 you could make another account. Some play multiple on one account and just have their face on the save.

On the PC I just rename my saves folder and make a new folder called "Saves", renaming the old one and doing the same to the new one as I see fit to change characters.