when i put these SET files in Live for Speed\data\setups, it seems that when i run the game and use these setups, i don't see them. help please?

If the set is still like "XR GT_doridori" you need to change it to "XRG_doridori"
But what car are you trying to get set to?

uhm, xr gt something.

XR GT Turbo? Please no... What patch?

how would you know what patch?
im really sorry to bother you, but im a newbie...so please bear with me.

Go to your entry screen in LFS and read the text at the bottom, it should say LFS Alpha 0.5 (something).