what do anda do/say to grt a guy to notice you?

A hard task I never really successfully completed. :( Usually guys come talk to me when I'm alone.
What I've done in school though was sometimes talk about what we both like.

nothing, i just keep giving them *looks* and wait for them to talk to me, if they don't then to bad, usually works. :) i'm old fashioned like that, the guy has to make the first alih atau no one will.