John Safrit wrote:

>       I've just built my DTAIT PIC programmer and I'm having trouble
> getting it to work.

I have written a set of answers to frequently asked questions (a FAQ)
to help people in your situation.  You can get the FAQ by FTP:

ftp://ftp.mcc.ac.uk/pub/micro-controllers/PIC/pic84faq.zip

> Does the parallel port ACK line need a pull-up to work correctly?

This is one of the questions answered in the FAQ and I suggest you
tie the ACK line to +5V via a 10K pull-up.

>  Has anyone else experienced this kind of problem?

Yes.  However, most people get it going eventually.  Please read the
FAQ and if you are still having problems feel free to contact me by
e-mail at the address below.

David
--
david.tait@man.ac.uk

P.S.  As you already have PIP-02 why not take a few minutes (literally)
to build a version of Erik Hermann's ultra-simple RS232 powered 16C84
programmer?  Rolan Yang and Silicon Studio have WWW pages to whet
your appetite:

http://hertz.njit.edu/~rxy5310/picb.html
http://rasi.lr.ttu.ee/~sis/com84.html

(Sorry, Jim :-)