CENTRAL U.S. -- Samsung Gravity custom ringtones?

[hittingsmoke]

I'm not actually a T-mobile user, I'm posting this on behalf of a friend.

I use Windows Mobile PPC's so I haven't owned a conventional cell phone in many years. When I want a custom ring tone I just chop up an MP3 and load it up via USB.

I know there are programs for certain phones to convert and upload MP3 clips into their native format and was wondering if there is one available for the Samsung Gravity or if it will accept MP3 clips for ring tones. She has the black Samsung Gravity from T-Mobile

I tried google but the results are always such a mess for cell phones.

Thanks