Between 2 dates display x

Hi all,

I have a column full of dates. I want to create a formula that looks at a cell in this column, and if it's between to certain dates then i want to display a value.

So for example: if the date in cell C4 is between 01/04/11 and 30/04/11, display 'Period 1'.

If its also possible i would like to add further sub functions, so using the above, if the date in cell C4 isn't between those 2 dates, but is between 01/05/11 and 28/05/11, display 'Period 2'.

Thanks in advance.