Chari,
If you need more inspiration, have a look at this thread from the Tennessee Bridal website, which deals with a similar issue regarding male ring-bearers, flower "girls", and bridesmaids. While the last postings to it took place some time ago, the information and POV's expressed in it are likely still relevant today. Bottom line - you would not be the first, and you won't be the last, male maid of honor.
http://www.tennesseebridal.com/fashi...ringbearer.asp
Seems to me that there was also another member of this forum, "gender_blender" ("Charlie") who served in a similar capacity at a wedding some time ago, and also reported on it here, along with pictures. Check the Forum archives to see if you can locate it, if you are interested.