Dunno if this is the sorta thing your looking for but as long as you have a writing function and a copy of Windows Media Player (the newest one - you'll have it if you've got Windows ME or later!!!) then it's pretty simple.
Open up your MP3 in the media player and then go:
File> Copy To CD and then it gives you options of which playlist to copy (I think you've gotta put the track into playlist 5 - already made 4 ya) then copy it to the CD ! ! !
If that doesn't work... don't shout at me, I'm only making an educated guess really ! ! !