Well, I'm thinking of dual boxing WOW. Mainly because my kids have characters on my account and I would like to play right along side of them, instead of us all taking turns playing.

and if we do this, then that will also allow me to dual box after they go to bed. I do have a few questions, I hope can be answered.

1-I was thinking about running the game twice on my laptop in windowed mode. Do I need to have 2 separate game installs?

2-Since I'll be starting a new character on the new account, what is the best way to power level the new character? Would running the lowbie thru instances with a lvl 56 be the fastest way?
2a- if this is the fastest way, at what level do you suggest starting to run the instances?

3-any tips or suggestions would be helpful.