Conditionally Hide or deactivate code in an activeX command Button.

I have a workbook with multiple sheets, the sheets will be labels 18.08.14 , 25.08.14 etc.

I have an activex Command button that will once pressed run code to send a section of the sheet as an email to a group of people. I need to disable this button when we're no longer in this period. i.e. if todays date is greater greater than 7 days from the sheet name either disable or hide the button.

Thank you for any advice or help, in advance.