Character Saving

In my game im currently working on i want 2 different things to save the campaign (which i would want to be saved on to the players pc) and the multiplayer savedata... i heard that i can do this through a website domain or something like that... i have a couple of website domains from dotster and i was wondering how would i do it from there...

any help is welcome

Check here: http://answers.unity3d.com/questions/971/how-to-scrip-a-save-load-game-option