This is by far the most random and also useless question I've ever seen. What are you having trouble with?
Finding a mp3 converter?
Using one you found?
Downloading one you found?
Downloading files in general?
If you're looking for one what are you after, a text based wave to mp3 converter, a full package?
Are you after one for playback or for encoding?
Does it need to work with a certain piece of software?
This may sound harsh but you have just done the equivalent of going to a car forum and asking "Has anyone had any luck using a camera? I need one for a photoshoot"
I first downloaded it because it's was pretty much the only free FLAC converter I could find, now that I've been using it I like it more than windows media player.