Moving to the USA , what now?

My husbands company is sending him to the US at the end of 2008 (for how long nobody knows). I never thought I would be moving to the USA and therefore I really don't know a thing about nursing in America . This is this is the first site I found on the Internet .
I'm a nurse for about 6 years (1 year ICU)and I still love my job but I have this horrible thought af me sitting at home and not being able to work . Is it possible for me to work in the US ? If not, well I can always start knitting. At the moment I'm just utterly confused and I hope I don't sound like an idiot.