Hi Melanie,

Some very good news, I managed to get it sorted,
It works superb,

The problem I had was two fold,
The first one was the configs fuse settings, It now works without the 4k7 pullup resister on the MCLR pin. (just as you said)

It would then work in the breadboard fine but not in my circuit,

To cut a long story short,
When I lifted the output pin and dropped an led on it, it worked fine,

So.... I found that,

The pic's output drives an opto and led in series, with a 470 ohm to the 5v rail.
The pic also feeds an input to another pic, (which drives my lcd)
Somehow there wasnt enough current to drive the circuit even tho there should have been,
so I fitted another opto isolator as a buffer and this sorted it.

What a run around,

Many many thanks for all your help and patience, your a star...

Cheers
Dave...