Payroll Systems and Online Timeclocks

We're (frantically) searching for a payroll system and an online timeclock. 

We want employees to check-in and out by logging into a computer.  The information would then be sent to a spreadsheet that calculates number of hours worked and pay.  The calculations sent to a third-party vendor who deposits checks into employee accounts. 

If you have advice, please leave it on the blog instead of e-mailing it to us.  We want to hear what others have to say about each advice.