Start with telling them who they are,how they became a band,what kind of music they play....u should play one step closer (cause it's their first singl),in the end (everybody know's that song)....breaking the habit from meteora (it's different from other song's ,so u could show them that they don't scream all the time ...)
And one ur favourite lp song (It's ur presentation ,show them what u like)...or make a mix of this songs
Say something about lp's albums....at the end of presentation play them my december...It's a great song,no screaming (if someone don't like that kind of music) and that song will stay in theirs head all day....
Good luck and have funn ......