In reply to chris fox:
> (In reply to Anonymous)
>
> They give you 2 months on arrival. The customs guy actually wrote 'Downtown' on my form when i told him i didnt know which backpackers i was going to!!!!!!
I thought it was 3?? but as the OP is only going for a month and assuming they hold a valid UK passport they should have very little trouble entering the US.
To be honest from my experience you can write what you like for the first nights address they don't check. The most common questions seem to be based around the reason for the trip and if you work.