mundetas 0 Light Poster

Could someone please help me with my access database. I have chart I added in a report. I wanted to group the month names instead instead of ordering it by the year month like 31 august 2009 for example. march value in 2007 was 2, and in march 2008 it was 4 but in march 2009 it was 1. hope this makes sense. Please check attachment.

Please please help:'(