installing personalized ringtones?

[black_co]

I searched and didn't find anything.....

I've had several ppc's before....

This is my first smartphone and I can't seem to figure out how to install personalized ringtones. (when somebody calls they have their own ringtone)

I disabled TF3D. Maybe this is my problem. I tried everything I could think of in contacts and phone, but no luck.

I feel dumb asking this because I can normally figure stuff out by trial and error, but this has just stumped me.

Thanks in advance.