Win7 and ScreenSavers

Ok, so i don't know if many of you have this same issue with win 7 but i'm gonna see what i can do.
Win 7 seems to in my opinion lack a collection of screen savers. MS has seem to over the years added more to the collections as they have issued new OS's. So here's my thoughts.
would it be possible to copy screen savers from older Windows (ie 2kpro,xp,vista) and add them to the system 32 folder, and (on a wing and a prayer) use them in 7? as i look at the extension for all of windows' screen savers they keep the same .scr. So, can this work? or am i off my rocker?
what do you all think? or has someone tried this and has input?