Auto Deduction of Advance from Salary

Dear Sir,

I made an application on vb.net named payroll for my own company, were
i create Advance form for employees who want to take advance.....below is the despcription :-

1. Emp No........
2. Emp Name .......
3. Advance Date/Month .........
4. Deduction from Month .........
5. Installment Amount ..........

I want to issue advance to employee and this advance will be deducted from his salary by the MONTH he want to refund his advance for example :-

If the employee X has taken advance in the month of January 2012 and he wants to return his advance in installments by the month of MARCH (NOT FROM THE MONTH OF JANUARY OR FEBRUARY) 2012. What I wanted to do that when the salary of the Mr. X is being generated for the month of MARCH 2012 the software should start deducting installment amount from his salary from the month of MARCH 2012 till his advance becomes 0.

Please help me on the above problem, i need codes to implement on my application.
I am waiting for positive reply.

Rgds,
Indranil

Tags: Visual Basic