extension for B1

[kushalo]

im from india
come here in nj for cpa exams
got visa till 06/22/2009
however i will have to stay back to finish my papers cause i failed in one of them who's result i got online only.
kindly email me the procedure and cost to apply for extension
i intend to stay back till the 13th of July, 2009
would i be able to do that without applying for extension?
please reply ASAP
but need some kinda reply asap
waiting
thank you

[immihelp]

You can stay until the date specified on form I-94. If you want to stay past that, you will have to apply for an extension.