Delete Excel Sheets from VB

I'm using following syntax to delete an Excel sheet from within VB.

obExcelProg.Sheets(3).Delete


But before the sheet is removed a messagebox appear asking the user to hit OK to delete the sheet or cancel to ignore the process.

What can I do to not display the message to the user?

I were too fast asking you guys for help.
This question were already asked and answered.
Here is what I ended up doing:

obExcelProg.DisplayAlerts = False
obExcelProg.Sheets(3).Delete
obExcelProg.DisplayAlerts = True