Accounting functions integrated into my website

I already have a website that has the following two functions. Accounts, Account Types. I am looking for a coder with a strong background in accounting who may already have a similiar script that can be integrated into my system or knows how to fix my site quickly so that I can see have a double entry booking system with financial statements. Its for a payroll system so its very basic. I thought about purchasing some ones already done on codecanyon.net.