VBA to find data from cells and update the old data

[walldream]

I am trying to get code for replacing data. Here is my scenario. In sheet2 I have data A2 to bottom is Month(1,2,3) and in B2 its year (2012) and in c2, d2, e2 is numerical data (200, 150,50)
Now, In sheet1 I have a table A22 for dropdown list to select month/ quarter. B22 for year. C22:E22 are to edit the selected month and year numerical data.
In Sheet1 If I select A22-April B22-2012 and enter new values in C22:E22 and click edit button. I would like to see the reflected changes in the sheet 2 table for the previous entered values.
Any help would be appreciated. Thanks!