V Lookup assistance Needed

Hi Guys.

I have a spreadsheet which is going to hold orders each day and each tab is going to be a month. I have the September tab working however I am struggling to get the October and November tab Working.

What I will need as a finished product is a tab for each month from September 2012 to September 2013 each with V Lookup to pull orders to the main sheet.
I think the V Lookup part is correct however the drop down box that should contain the order number isn't working properly.

I have attached the spreadsheet. Any help would be much appreciated as I am very stuck.