Or you can run an Access macro from a simple Windows script file. Edit this script with your database/macro information and save with the extension .vbs. You can now run it through the Task Scheduler. (You should test run it separately first).
*************************************
Dim objAccess
Dim strPathToMDB
Dim strTableName
Dim strFilePath
Dim strMsg
' EDIT with your path and database name
strPathToMDB = "c:\Database.MDB"
' Create Access 97 Application Object
Set objAccess = CreateObject("Access.Application.8"
' Open the desired database
objAccess.OpenCurrentDatabase(strPathToMDB)
' EDIT with your Macro Name
objAccess.DoCmd.RunMacro "MacroName"
strMsg = "The macro named" & vbcrlf & " UpdateVendData" & vbcrlf & " execued successfully."
MsgBox strMsg,vbInformation,"Finished"
' Clean up
objAccess.CloseCurrentDatabase
ObjAccess.Quit
Set objAccess = Nothing
**********************************