WEST U.S. -- Sprint picture messaging---do they have a site?++

Hey all

I wanted to send a picture message to my friend who has sprint and I can find the website where I can type a message and send from my computer....but I'm looking for the same thing only where I can attach a music clip or picture. Verizon has this...at & T and t-mobile---but can't find sprints
or a way to send it from my email like her number@sprint.pix.pcs.com or something like that

I've never had Sprint so I'm not sure what to do
If anyone can help I would appreciate it!
Thanks!

 

Thank you! I'll give that a try