First thoughts are

1. declare a bit array of the appropriate size

2. declare your output pin

3. set the bits of the array to the desired state

Then transmit it something like this.....
Code:
For x = 0 to {number_of_bits-1)
    If bitarray[x] = 1 then
        outputpin=1
    else
        outputpin=0
    endif
    pause 1 ' wait for 1ms - might need changing for pauseus 990 or similar
Next
I might have the state of the pin wrong for your application but you should get the idea