Parameter Error When Performing A Transform Data Task From Access To SQL Server 2K

I have an Access 2.0 database that holds call data on a mapped drive. I am running MS SQL Server 2000. I can open it and view the records inside. I can even run the query below and get results, if I removed the CallDate and CallTime parameters.

SELECT CallDate, CallTime, Mid(CallRecordData, 68, 3) AS Extension, 'I' AS Direction, Mid(CallRecordData, 34, 11) AS Called,
Val(Mid(CallRecordData, 18, 2)) + Val(Mid(CallRecordData, 21, 2))/ 60 AS Minutes, Val(Mid(CallRecordData, 21, 2)) AS Seconds
FROM CallRecords
WHERE (CallDate = ?) AND (CallTime >= ?) AND (CallTime < ?) AND (Mid(CallRecordData, 30, 1) <> '9')

When I preview in the Transform Data Task, I get:
Package Error
Error Source: Microsoft JET Database Engine
Error Description: No value given for one or more required parameters.

When I look at the parameters, they are listed. I check their values, and they have the appropriate values (DateCalled, String, 07/14/2005) (StartTime, String, 06:30) (EndTime, String, 07:00)

When I run it in the build query or in Access with a linked table to the source, I can enter the values when asked for them and it works.

Thanks for any help you can provide.