Root root?

[lbranham]

Can I root my fiancees infuse via my EVO? Or with her phone itself?

 

[electricpete]

Can I root my fiancees infuse via my EVO?

No. To root, you need to connect the phone to a computer.
Then for Infuse coming from Froyo, user superoneclick*
For for Infuse coming from Gingerbread, use a Heimdall root package from xda
Read all instructions.
* make sure you get your superoneclick from a reputable download source like xda