I am trying to write a query in SQL.  The application (Access)has a
date range input box that asks what date range i am interested in. 
The format is standard MM/DD/YYYY.  The SQL data base that I am
querying is set up with two fields Expense_Yr and Expense_Month
(notice no day and dates are parsed out to seperate columns).  How
do I get my query to convert the standard date to two seperate
criteria?

You could set your criteria to be where Expense_Month=Month(submitted
date) and Expense_Year=Year(submitted date)...

"Month" and "Year" functions being relative to the ability of  your
SQL server to parse those functions...

You should consider changing how you are storing the data in Access. 
I suggest using a integer field and storing the data as yyyymm.  March
2005 would be 200503.