Ken Snell has created a series of Access macros which can be used to import Excel files. He has posted them to this site. One of these is named, 'Import Data from All Worksheets in All EXCEL Files in a single Folder into Separate Tables via TransferSpreadsheet (VBA)'. I've posted it below with the beginning Sub and End Sub lines necessary for it to function in Visual Basic.
Dim blnHasFieldNames As Boolean, blnEXCEL As Boolean, blnReadOnly As Boolean
Dim intWorkbookCounter As Integer
Dim lngCount As Long
Dim objExcel As Object, objWorkbook As Object
Dim colWorksheets As Collection
Dim strPath As String, strFile As String
Dim strPassword As String
' Establish an EXCEL application object
On Error Resume Next
Set objExcel = GetObject(, "Excel.Application")
If Err.Number <> 0 Then
Set objExcel = CreateObject("Excel.Application")
blnEXCEL = True
On Error GoTo 0
' Change this next line to True if the first row in EXCEL worksheet
' has field names
blnHasFieldNames = False
' Replace C:\MyFolder\ with the actual path to the folder that holds the EXCEL files
strPath = "C:\MyFolder\"
' Replace passwordtext with the real password;
' if there is no password, replace it with vbNullString constant
' (e.g., strPassword = vbNullString)
strPassword = "passwordtext"
blnReadOnly = True ' open EXCEL file in read-only mode
strFile = Dir(strPath & "*.xls")
intWorkbookCounter = 0
Do While strFile <> ""
intWorkbookCounter = intWorkbookCounter + 1
Set colWorksheets = New Collection
Set objWorkbook = objExcel.Workbooks.Open(strPath & strFile, , _
blnReadOnly, , strPassword)
For lngCount = 1 To objWorkbook.Worksheets.Count
' Close the EXCEL file without saving the file, and clean up the EXCEL objects
Set objWorkbook = Nothing
' Import the data from each worksheet into a separate table
For lngCount = colWorksheets.Count To 1 Step -1
DoCmd.TransferSpreadsheet acImport, acSpreadsheetTypeExcel9, _
"tbl" & colWorksheets(lngCount) & intWorkbookCounter, _
strPath & strFile, blnHasFieldNames, _
colWorksheets(lngCount) & "$"
' Delete the collection
Set colWorksheets = Nothing
' Uncomment out the next code step if you want to delete the
' EXCEL file after it's been imported
' Kill strPath & strFile
strFile = Dir()
If blnEXCEL = True Then objExcel.Quit
Set objExcel = Nothing
Note especially that on the line beginning 'blnHasFieldNames =' the setting should be 'True' if the Excel files you're importing have column headings, and on the line beginning 'strPath =' you should specify the path to the folder containing the Excel files you want to import.
A macro like this comes in really useful when you're importing dozens of Excel files, but in this example we're working with just four files.
The macro will quickly create tables like these.