Who in their right mind, since the early 90s, writes their own payroll systems? There are lots of software packages out there that can do the job without having to modify them or write new propgrams. And, even if the fit is only 80% or 90%, it's still easier, quicker, cheaper and less risky to modify packaged software than writing programs from scratch. I can't think of a single private sector company, big or small who would write their own payroll software. Throw PRESTO in the same bag. Our bright lights at the TTC decided that writing their own software was better than using a commercially available package and look at the problems they are having.