Hi Chris,

It doesn't do anything, (by the way the names dave)

I have re programed the pic, (it programs fine with no errors)
I have tried in my circuit and also bread boarded it.
Here's what I get when powered up,

The pins of the i/c are as follows:-

GP0.0 high no change
GP0.1 low no change
GP0.2 high no change
GPO.3 high no change
GPO.4 high no change
GPO.5 high/low trigger (i/p toggle)

Cheers
Dave..