[JeremyD]

Quick books has a payroll module - I have also used a product called "smartclock" but that is an electronic time and attendance that hooks to your computer.

Here's a list of vendors that provide different levels of service

http://www.americanpayroll.org/venlinks.html

I run a temporary help company - and have a sister company that is a professional employer organization. They buy benefits in mass and distribute to their client companies...