Wondered if anyone knew the song just before tiesto came out at his NYE Vegas 05 set. The main corus line was like "Runaway, Runaway, Runaway"... if anyone knows that would be cool. I know I had a blast, I hope all of you that attended did as well.

This is just a wild guess but is it:

Real McCoy - Runaway

The same exact lyrics are featured in this song.
I doubt Tiesto would play this, but it's worth a shot.