Modules & VBA :: How To Modify A Table

I want to modify a table called FC_TEMP via adding some columns from another table called AVERAGE_TRP. Do I have to create a new query table and then insert the output into a new table?The following code shows me : Cannot execute a selected query.Is there a way to update this FC_TEMP table without creating another temporary table?

Code:

Public Sub Update()
Dim strSQL As String
strSQL = "SELECT FC_TEMP.*,AVERAGE_TRP.[Average_new_TRP_EUR],AVERAGE_TRP.[Average_old_TRP_EUR],AVERAGE_TRP.[Average_Margin] " & _
" FROM FC_TEMP " & _
" INNER JOIN AVERAGE_TRP ON FC_TEMP.[PRODUCT_ID] = AVERAGE_TRP.[PRODUCT_ID]"

[code]...