Dear Rhonda
Really sorry to learn of your husband's current condition - but feel confident that you're definitely on the right path. I hope that those with a GB4000 device will come forward and assist you soonest ... as we all know just how daunting this all appears in the beginning.
You'll be a pro, offering others help within a few weeks!
In the meantime, do visit a fellow member's website, as he has a section specifically on Leukemia, which I'm sure will also help you heaps.
http://www.heal-me.com.au
All the very best - enjoy your new machine & God bless you both!
@nnie