help me with C#

Designed by the targeted implementation of the management of

employees in a company. Information needs of staff management including: code

number of employees, their lot, name, permanent address. Company employees divided into 4

following categories:
1. Staff that services eligible under the salary with the salary

is 1.5 million / month. Monthly, the real wages of employees

will be less a 10% if feedback is not good

capacity to work.

2. Management staff: staff enjoy this type of salary system by the number of

and basic salary. However, the food was calculated by

work on the standard is 26 days, each day will be deducted by 3%

(base salary x number of systems), each day more will be charged more

((base salary x number of Us) / 26) x 2.
3. Sales: a monthly salary of employees is calculated

for working days (standard is 26 days) x 50000. Each day will b

except to 80,000 salary, daily work will be charged 80,000.

4. Marketing staff: implementation of the hawk, on a more

make the sales users. Each product sold will be

20,000 enjoy. Also, if in basic 4 products

subject up, staff will support 150,000 gas money.
Requirements: the program must be able to perform

1.Add new, delete employees in the company.

2.Archive list employees in files

3. In statistics by the following:

o payroll each employee

o a payroll employee ordered by increasing

o payroll all employees in the company ordered increases

gradually by

its very urgent need!who can help me! many thanks

Please be more specific...