Samsung E770 - seeking Vibetones, can you help?

Have purchased a 2nd hand Samsung E770 which is now unlocked (was on T
Mobile) it's only got 1 rigtone that vibrates (T Mobile default). I
can set MP3's as a ringtone but they don't vibrate. Can anyone tell me
where the heck I can find some more ringtones that'll vibrate - Dunno
what filetype they are. I'm doing my fruit trying to solve this one.

I love the phone and all it's functions, I would just like a few
different tones to choose from.

Really hoping someone can advise.

Cheers in advance

Sioux