Send app from one mytouch to another

[MiiszMay]

Me & my sister have mytouches & she has an app that is not on the market anymore. She tried sending it to me thru astro but wasn't able to find it. Can someone pls help me, what is the name of the hello im in astro. I really need the help. Thnks!

[simms22]

Me & my sister have mytouches & she has an app that is not on the market anymore. She tried sending it to me thru astro but wasn't able to find it. Can someone pls help me, what is the name of the hello im in astro. I really need the help. Thnks!

i cant tell you how to do it, but i can tell you that your phone needs to be rooted.

[MiiszMay]

How do I root the phone? What does dat mean?