I am trying to work on a program that would be able to save log files for each member of staff.
Mean while there would be like 20 staffs and they would log on with their user names, password and their rank would be in a combo box.

This is just the part one of the program it's still going to be integrated in to a database for stock taking.

Thanks in advance

Seems that you are not receiving replies because you did not make yourself clear. Stand back and read that as a contributor. Do you understand what you asking? Tell us exactly what you want. Perhaps, I can assist

Well I guess you've already mentioned the keyword - DATABASE. create a table in your database to keep track of your logged users and thier status.

You can take advantage of the Microsoft Enterprise logger in this. We recently created a sort of Logger for logging events and errors by user and the Logger made it easy for us as it already came with basic utilities we needed.