Hello, I have this problem with an application that I am supporting. The scenario is that I have a ms access 2003 application in a 64 bit windows 2008system or windows server 2003. The problem is that I have a function that needs to be called when I execute a query object, ex: when I open the query object by clicking the design button I have this query string"select funcGetCode(dummy) as column1, description from temptable" This funcGetCode() is from a reference dll file of the mdb proj. The problem is that when I try to execute it(debugging through ms access), an error will be reported wherein it states that"Undefined function 'funcGetCode' in expression. Meaning it was not able to find the function. On a 32-bit system all is ok without modifying the mdb.Any help is much appreciated.Thanks,Stan S.