I have a copy of P16PRO that was mentioned a while ago, I have check
this out and the circuit that was included in the zip file is a PC
printer port programmer, with only 5 connections to the PIC, Vss, Vdd,
RB6, RB7 and MCLR.

I have run the programming software that was with it and looked at the
device list it includes the 54 and 52, I have not tried it out yet as I
have not got around to building the hardware, should I bother or not.

Ken.

+-----------------------------+----------------------------------+
|   ken hewitt                |   Email ken@welwyn.demon.co.uk   |
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