Hi, free payroll software which can import & export excel files & give complete record of employees. Thanks?

Hello, everybody, i have a very tough job in office, i need help from you guys & guls please help, me i need a free/ Demo payroll software which can help me to prepare monthly payroll of around 3000 Employees, & it should import Excel files & Export reports in excel files, & should maintain a complete record of employees, it should give complete personal details of employees & should be able to provide detail summary of the employees as required - salary summar of an Emp for 2-3 years, or 3-4 months or a particular month, for an employee for a group of employee, etc. I would like to thank you all in advance for isting me to find a proper software.