Where can I download a program just for payroll processing?
There are plenty of programs you can use in the Software Informer's database. Access it in order to view a description for all the applications available and also to obtain a download link. I suggest you take a look at Smart Payroll or PayPunch. Both are shareware applications, but you can obtain a download link for a trial version by pressing the download button located under each of the program's name on its review page.