C# Windows form application and excel

Very short and easy job. Much of the code is already complete its just some of the more complicated things i need help with. I have created a window for application with 3 datagridview panels. The first 2 datagridview panels return the values of the 2 excel spread sheets when the respective button is pushed. (already complete). When the next button is pushed the 2 datagridviews are compared and searches for a match where row i from datagridview1 equals row j from datagridview2. The rows froms from dgv1 and dgv2 are both removed from the panels and the excel sheets behind them. Row i from from excel book1 sheet1 (the matched row i from the DGV) has a corresponding row in excel1 sheet2 which has the same Column A value. The row in excel1 sheet2 with the column a match is returned and deposited in GDV3. And finally a macro is run in excel1. As i said much of the code is done and the WFA is designed. Prob about 30mins work for someone who knows what they are doing.