1. Wisp628 has (for good reasons) series resistors in all its control
lines to the target PIC, so if the LCD somehow drives the line it will
probably win (without anyone loosing its smoke). I always put a 2k2
resistor between the PIC and the LCD in the releveant lines (RB6, RB7,
LVP), I recall some problems before I did this. Probably any value from
1k up to 100k or so will work.

2. Wisp628 (often) needs some additional circuit to re-program a PIC
that has its /MCLR configured as input. see
http://www.voti.nl/wisp628/index_1.html#dongle

Wouter van Ooijen

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Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products

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