Welcome to the forum.

Here is how it works with people trying to sell books and simulators.

I made an LED blink on a 16F84...Now I am expert with MiroChips!
I will write a book.

I downloaded a compiler to use... made LED blink..Expert again!
I will make a Simulator.

It is obvious the person that made the simulator does not know PIC chips or they would have had an error show when you are trying to use an ADC pin as an output before it has been set up for that function.

Stop wasting your time with that crap and spend the same time reading the data sheet and the manual of the parts/ compiler you are using.

This thread should get you going.
http://www.picbasic.co.uk/forum/showthread.php?t=561
It talks about setting the ADC to digital.