Please Help, Need Visa Advice!!!

Hi,

I don't know if anybody can help me, but I am extremely confused. I posted a thread on here last week as I had been offered a position as a travel nurse, which I have now decided not to take up, but I have been offered employment in Boston, which I am taking.

I am very confused about which visa I should be applying for, there appears to be very conflicting advice. I now understand the USA don't offer temporary visas to Registered Nurses (which I have to say seems a little mad as seen as Canada/Australia/UK and New Zealand do and I thought they had a shortage of nurses), but anyway I don't know what I should do now. Should I apply for a Green Card? If I do this how long would it take? It seems mad that you should have an offer of employment and be waiting 1-2 years for your visa. Also could the visa process be commenced whilst I am still waiting for exam results, licensure verification etc

Thanks for your help

Kate