Copying a date through multiple sheets.

Basically, what I am trying to do is my workbook has 12 sheets, 1 for each month. In cell A7 on the first sheet (Jan) I would like to enter 01-01-2009 and then it add a month on each of the sheets. e.g. 01-02-2009 01-03-2009 and so forth. I know I can manually put in the first of the month on each of the sheets, just wondering if it can be automated.

Thanks for your time

Alan