XML data is by nature structured... If you know the structure of XML data, you can write a routine that can "skim" the data out of it (assuming you have no other way to get the values from the xml data) and then push it up a Table in MSAccess that meets the same data structure...
This requires you to do some work first, understanding the XML, writing the routine to interpret the XML file, creating the AccessDB Table with the proper design, then writing a routine to push up the interperted data...
Good luck!! I have done some XML Serialization, but never tryed to deserialize XML from an XML file that wasn't Serialized from an object in memory first... Lookinto System.XML.Serialization, you might find some better stuff looking around for that.
Sean C