fetch a file from a directory?

[eluser]newbie boy[/eluser]
hi guys...

i need to get a file from a certain directory..

like...

C:\file\mp3\song.mp3

how can i get "song.mp3" from this path so i can pass it to a certain variable?

thanks...

[eluser]Dam1an[/eluser]
Google?
I'll give you a clue, it's the first result