Ive had a go at writing some code. This is just for the serial part. The idea is that if the chip gets chr(255) then it sets the next 16 bytes to the brightness levels (Later to be used to control the triacs).

Code:
datapos var byte
newbyte var byte
brightness var byte [15]

trisc=%11111111
spbrg=129
rcsta=%10010000

datapos=16

loop:
if pir1.5=1 then
    newbyte=rcreg
    if newbyte=255 then
        datapos=0
    else
        if datapos!=16 then
            brightness(datapos)=newbyte
            datapos=datapos+1
        endif
    endif
endif
goto loop
I do have a few questions about it though. Can this only be used on a pin labeled RX? For this chip the pin labeled RX is RC7.

An example i have says "RCSTA = %10010000 ' Enable serial port and continuous receive". What are we setting here? Are we telling it which pin is being used or is it just a standard value that means "on"?

Is my code any good or should i scrap it and start again? :P