Date formula Puzzeled

Hello,

Hi , can any one help me in this ,
that i have used this formula

And if you want to know a date with adding a number of months to an other date :
A B C
1 Start month No. of months End months
2 1/5/2009 4 ?



Tried with this formula in C2 :


=MIN(DATE(YEAR(A2),YEAR(A2)+C2+1,0),DATE(YEAR(A2 ),MONTH(A2)+C2,DAY(A2)))


But i can't able to find the end date.
CAN ANY ONE HELP ME IN THIS .

thanks in advance
Joe.