Query Criteria From Listbox Problem

Hi there. I have a problem with queries that i am creating on the fly with access. My setup is this:

A table called Order which has various fields including a field called Date Taken. The format of this is Date/Time with the format d/m/yyyy.

A form called frmMultiSelect which has a listbox called lstdates and a command button called cmdOpenQuery.

in lstdates the row source is: SELECT DISTINCT Order.[Date Taken] FROM [Order] UNION select "......ALL......" from [Order];

And in the button onClick event i have the following code (adapted from a web source):

Private Sub cmdOpenQuery_Click()

On Error GoTo Err_cmdOpenQuery_Click
Dim MyDB As DAO.Database
Dim qdef As DAO.QueryDef
Dim i As Integer
Dim strSQL As String
Dim strWhere As String
Dim strIN As String
Dim flgSelectAll As Boolean
Dim varItem As Variant

Set MyDB = CurrentDb()

strSQL = "SELECT * FROM [Order]"

'Build the IN string by looping through the listbox
For i = 0 To lstDates.ListCount - 1
If lstDates.Selected(i) Then
If lstDates.Column(0, i) = "......ALL......" Then
flgSelectAll = True
End If
strIN = strIN & "#" & lstDates.Column(0, i) & "#,"
End If
Next i

'Create the WHERE string, and strip off the last comma of the IN string
strWhere = " WHERE [Date Taken]=" & Left(strIN, Len(strIN) - 1)

'If "All" was selected in the listbox, don't add the WHERE condition
If Not flgSelectAll Then
strSQL = strSQL & strWhere
End If

MyDB.QueryDefs.Delete "qryCompanyCounties"
Set qdef = MyDB.CreateQueryDef("qryCompanyCounties", strSQL)

'Open the query, built using the IN clause to set the criteria
DoCmd.OpenQuery "qryCompanyCounties", acViewNormal

'Clear listbox selection after running query
For Each varItem In Me.lstDates.ItemsSelected
Me.lstDates.Selected(varItem) = False
Next varItem


Exit_cmdOpenQuery_Click:
Exit Sub

Err_cmdOpenQuery_Click:

If Err.Number = 5 Then
MsgBox "You must make a selection(s) from the list", , "Selection Required !"
Resume Exit_cmdOpenQuery_Click
Else
'Write out the error and exit the sub
MsgBox Err.Description
Resume Exit_cmdOpenQuery_Click
End If

End Sub

When i open the form and look at the list box the dates are there along with the ......ALL...... however the dates whose day is less than 10 are displayed with the leading 0 e.g 04/12/2005.
When i click the run query command button on one of these dates the query is opened blank. the sql code output is:
SELECT *
FROM [Order]
WHERE [Date Taken]=#04/12/2005#;

If it was changed to 4/12/2005 it works but i dont know why access is putting in this leading 0.

Please help me!! I can send the database if needed

Thanks very much