We are on our sixth adoption, so we've had quite a few homestudies. Believe me, they are not a big deal! The SW mainly wants to talk. They ask why you want to adopt, how is your marital relationship, what is your relationship with your extended family, how are your finances, how do you feel about raising a child of another race, etc..
She'll take a little tour of your home too. The SW that interviewed us for our last two adoptions was awesome. She felt like our kid sister by the time she left. Relax and offer her a coke or bottled water!
By the way, I'm a Marcy too.. I have seen so many Marcys on the forum... What's up with that??