Lock Data Entry Upon Save

[ks26]

Hello! I am very new to VBA programming so I'm hoping someone on here can help me out. This is my problem: I have created a worksheet which users will open daily to add readings to. I would like them to be able to edit their daily data while they are in the sheet but not previously entered data. And when they save the file I would like all data to become unable to be edited except to an administrator with a password. Preferably, this would be prompted by a message box when they save the file that will tell them that something to this effect is happening. Any help would be greately appreciated thank you!

[Mumps1]

Hi ks26. Could you post a copy of your file? It would be easier to help if we can actually see what we're working with. Include a detailed explanation of what you want to do.