How long does it take to get an interview?

My fiancee and I are relocating to Houston (I know, moving to TX is pretty much the theme of these boards!) I am looking for a position as a Neonatal Nurse. I have 10 years of nursing experience wich includes 9 years of NICU experience. In addition, I have a master's degree and certification as a Neonatal Nurse Practitioner. I've given up hope of finding an NNP job, but I am confident that I am abundantly qualified for all of the RN positions I have applied for thus far. I already have my temporary Nursing License in TX, all I need to do is take the online exam.

I would like to know 1) Is the exam difficult? I tried to read the materials they suggest, and it its quite literally a snoozefest of leagalese. 2) How long do Houston nurses typically need to wait after applying onlne for someone to contact them for an interview? I'm asking mostly because my #1 pick, that I applied to weeks before I applied elsewhere, basically states in it's FAQ that if they don't want to interview you, they don't tell you (no rejection e-mail or anything!) The second reason is that we are moving in 5 weeks and my future husband is freaking out because I don't have a job yet...I'd just like to give him a little bit of a timeframe so he'll calm down! I'm not expecting to have a job by the time we move, but I am hoping to at least have some interviews set up. My first round of applications went out at the beginning of July.

Thanks!