Can you give a little more detail, like:
What area of programming? (like DTSCode said)
How skilled are you?
How much time are you willing to spend?
etc.
if you do... i would love it if you would post the source for the interpreter and ide. i collect the interpreters/compilers and am actually looking for a bf ide
@Alam
Yeah that is too vague to get any real help. Like retsgorf597 said, we need to know what your level of experience is, how much time you have to get the project done, what area of programming you are wanting, etc.
@giblit
I keep forgetting BF is a language so everytime I see it I can't help but laugh.