Extract Date Information, Disregard Year

I need to do an if then statement that takes the date (which is in the form of "3/31/2009" and only use the "3/31" info. Only its slightly more complicated than that, its a formula that links to another program. Basically, the current quarter end date is "curdate()" so if i want a cell to show that, i enter "=curdate()" and i would like to build an if then statement using that date but only using the month/date combo (only possibly dates are 3/31, 6/30, 9/30, 12/31) so I guess I could even use just the month, the problem would be to extract that information in a formula and build the if then statement around it.

So:
if its 3/31, show 1
if its 6/30, show 2
if its 9/30, show 3
if its 12/31, show 4