PIC18F programming

[Randy Day]

Well, after copious amounts of searching,
I came up with this site for a PICkit 2
adapter to program PIC18F's:

http://pic18fusb.online.fr/wiki/wikka.php?wakka=PicKit2Header

When I plug it in and try to download
my hex file, the software just says
'insert device'. Do I need to press
the 'reset' button at some point in
the process?

Before I go assuming I've blown my chip,
can anyone see any obvious problems with
the circuit as drawn?

I've checked my wiring 3 times, and
doubtless I'll be checking it a few more.
I'm specifically trying to get it to work
with a PIC18F2455.

Any help/observations/advice is welcome.