Merging Problem - AUTO MERGE?? Help!!

I have a workbook that has cells A & B merged, C & D merged, E & F merged, G by itself, and H & I merged. The problem is that when i create a new row is there a way to have excel auto merge my cells using this format? That way I don't have to merge the cells everytime I need to add a new entry. Thanks! Also I am using excel 2007.