Older Song, Can't remember name or anything.?

I'm trying to remember a song from a few years ago, it was either 2001 to 2003, it was on the radio stations for like pop, and rock and todays music basically, it was a upbeat, dance type song, sort of like eiffel 65, but different. It was singable, out during the school year, becaues I remember everybody singing it at school.. Any help?