Thanks for the reply. Here's the information you need:
Quote:
"If you hold a visa of any classification, including a B-1/B-2 visa, you are not required to hold a return ticket; you may enter the United States on a one way ticket. All travelers should carry with them for presentation to U.S. officials, if required, evidence of funds sufficient for their visit and, with the exception of H and L visa holders, evidence that they have a residence abroad to which they intend returning at the end of their stay. Examples of such evidence include: traveler's checks; return tickets; copy of latest bank statement; letter from parents saying they will support you; evidence of current employment; evidence of enrollment at an academic institution."
Source:
http://www.usembassy.org.uk/cons_new/faqs/faq_ visa_niv.html#niv070
Chris