What's a good age to start getting into Mindstorms with my child? What is a good age to start getting a child into LEGO Mindstorms? Also, how would you recommend introducing her?

I can't wait to start building robots with my daughter. She loves LEGO and the idea of robots, and I know she will have a blast. I know I will need to (and actually really want to) help her do everything.

I think I already know the answer (aka, now as she's almost 5), but I'm looking to see what suggestions others might have from their own experiences. Thanks!
I started at age 9 and it was just right for me. Since Mindstorms now comes with a modified version of LabVIEW, I'd maybe wait until they can learn how to use the software.