Ramboo666

Hello everyone, i have a problem with getting the mods i download to work. I downloaded one mod called 20Horrorcreatures or something like that and it worked, but after that i haven't gotten any mods to work. I download the mod and unpack it, then i place them in the oblvion/data folder but when i enter the "data files" from the launcher menu no mods appear only the first one i downloaded. What could be the problem? Thanks In advance for your help!

What do you mean with backing up my saves? Should i backup all program files or just my saved progress in the game?