Change a query's SQL code from excel

[cht13er]

Good day all, I'm a newish VBA coder who was taught from Google Groups
- so thanks to you all very much!

I have run into a minor problem, I hope you can give me some help ...
I'm running office 2003 for this one.

In excel I have a program running ... and based on the results of an
optionbutton (called "Form2.Radio_Al lParameters") I want to change the
SQL that runs a query in access. If the button is True, the SQL should
read "WHERE (((ChemistryRea dings.UsedDate) =Yes) AND
((ChemistryRead ings.UsedLocati on)=Yes) AND ((MOE_Tables1to 6.Used)<>No
Or (MOE_Tables1to6 .Used) Is Null) AND
((MOE_Standard_ Definitions.Use d)<>No Or
(MOE_Standard_D efinitions.Used ) Is Null));"

but when the button is False it should read ".....AND
((MOE_Tables1to 6.Used=Yes) AND...."

The reasons that I think that I want to change the SQL and not create
a new query are: (1) it is a crosstab query that's built off of this
query that is what is imported into excel and (2) I don't know how to
create the relationships from excel.

My excel VBA snippet is like this:

'--------------------------------code start-------------------------
'Public Sub cmdGo_Click()

'Declarations
Dim DB As DAO.Database
Dim RS As DAO.Recordset
Dim FLD As DAO.Field
Dim qryDef1 As DAO.QueryDef
Dim strSQL As String

'Recall filepath and open database
FileName = Sheets("README" ).Cells(1, 20).Value
Set DB = DAO.OpenDatabas e(FileName)
'---------------------------------------------------------------------------------
'Re-create the query "ChemistryQuery " based on whether you want ALL
the parameters (including those not in the standards) or not:
Set qryDef1 = DB.QueryDefs("C hemistryQuery")

If Form2.Radio_All Parameters = True Then
strSQL = "SELECT [ChemistryReadin gs].[Parcel] & ' ' &
[Location] & ' ' & [LaboratoryID] & ' ' & [LaboratoryJobNu mber] & ' '
& [SampleDate] AS Header, Parameter_Names .[CAS#], MOE_Tables1to6.
[Parameter ID], ChemistryReadin gs.Parameter,
MOE_Tables1to6. StandardName, MOE_Standard_De finitions.ID,
MOE_Tables1to6. Standard, MOE_Tables1to6. Units AS MOE_Tables1to6_ Units,
MOE_Tables1to6. Notes, ChemistryReadin gs.SampleDate,
ChemistryReadin gs.Reading, ChemistryReadin gs.Units AS Reading_Units,
ChemistryReadin gs.Comments, ChemistryReadin gs.UsedDate,
ChemistryReadin gs.UsedLocation , MOE_Tables1to6. Used,
MOE_Standard_De finitions.Used FROM MOE_Standard_De finitions RIGHT JOIN
((Parameter_Nam es RIGHT JOIN ChemistryReadin gs ON
Parameter_Names .ParameterName = ChemistryReadin gs.Parameter) LEFT JOIN
MOE_Tables1to6 ON ChemistryReadin gs.Parameter =
MOE_Tables1to6. Parameter) ON MOE_Standard_De finitions.FullN ame =
MOE_Tables1to6. StandardName" & _
"WHERE (((ChemistryRea dings.UsedDate) =Yes) AND
((ChemistryRead ings.UsedLocati on)=Yes) AND ((MOE_Tables1to 6.Used)<>No
Or (MOE_Tables1to6 .Used) Is Null) AND
((MOE_Standard_ Definitions.Use d)<>No Or
(MOE_Standard_D efinitions.Used ) Is Null));"
Else
strSQL = "SELECT [ChemistryReadin gs].[Parcel] & ' ' &
[Location] & ' ' & [LaboratoryID] & ' ' & [LaboratoryJobNu mber] & ' '
& [SampleDate] AS Header, Parameter_Names .[CAS#], MOE_Tables1to6.
[Parameter ID], ChemistryReadin gs.Parameter,
MOE_Tables1to6. StandardName, MOE_Standard_De finitions.ID,
MOE_Tables1to6. Standard, MOE_Tables1to6. Units AS MOE_Tables1to6_ Units,
MOE_Tables1to6. Notes, ChemistryReadin gs.SampleDate,
ChemistryReadin gs.Reading, ChemistryReadin gs.Units AS Reading_Units,
ChemistryReadin gs.Comments, ChemistryReadin gs.UsedDate,
ChemistryReadin gs.UsedLocation , MOE_Tables1to6. Used,
MOE_Standard_De finitions.Used FROM MOE_Standard_De finitions RIGHT JOIN
((Parameter_Nam es RIGHT JOIN ChemistryReadin gs ON
Parameter_Names .ParameterName = ChemistryReadin gs.Parameter) LEFT JOIN
MOE_Tables1to6 ON ChemistryReadin gs.Parameter =
MOE_Tables1to6. Parameter) ON MOE_Standard_De finitions.FullN ame =
MOE_Tables1to6. StandardName" & _
"WHERE (((ChemistryRea dings.UsedDate) =Yes) AND
((ChemistryRead ings.UsedLocati on)=Yes) AND ((MOE_Tables1to 6.Used)<>No
Or (MOE_Tables1to6 .Used) Is Null) AND
((MOE_Standard_ Definitions.Use d)=Yes);"
End If

qryDef1.Execute strSQL
-------------------end code-----------------
My problem is that I am unsure of IF I can change the SQL of the query
at all ..... but also how to do so if I can (the last line is what is
giving me the error called "runtime error 3421 data type conversion
error".

Thank you very much for any help that you can supply, I will monitor
this thread super closely in case I should have provided any more
information.

Chris