WOW that is great Dana. There are a lot of resources in the Wiki that can help you in regards to coming out at work.
Just as I and others have advised, Get Everything In Writing. My HR was very supportive in the beginning, but after our district HR passed over, she began to be less and less supportive. Then we got a new Store Manager and it went down hill fast.
I don't wish to rain on your parade, but just Please CYA.
Janet