MSDE && SQL2000

I am developing a Crystal Reports App in VS2005 (VB).  I was originally working on an XP machine with MSDE and stored procedures where it worked fine.

I then transferred the development to a Win2003 machine with SQL2000 and am now getting the following error;


 Failed to open a rowset. Description: 'Get_Calls_By_MLO_Date' expects parameter '@DT1' which was not supplied.  Plus some other error detail.


Here is the SP.


CREATE PROCEDURE Get_Calls_By_MLO_By_Date
 @DT1 datetime,
 @DT2 datetime
AS
SELECT MLO, CallNo, DT, Type FROM Actions
WHERE dt >= @DT1 AND dt <= @DT2 AND ActionID=1
ORDER BY MLO, DT
GO


If I transfer everything back to the XP machine it works fine.


Any ideas?


Thanks


Terry.