Editing XML files by comparing a field value in an Access table

Business is booming and I need to outsource. Here is the project. We have about 600+ *.XML files in a folder in which some of the data elements within each XML file needs to be updated based upon a matching field in an MS Access table. The XML files are NOT uniform in data element structure, the schema can be a bit different from XML file to XML file. The high level process flow is to compare one field of a table to one specific element in the XML file and update the 3 related data elements as needed within the XML file. There are 3 sub-folders and 5 files. One MS Access Db file and 4 XML files. We use DAO when needed. The fields that need to be matched up are: Db XML_File ReferencePartNumber = PartNo BirdCage = Cageno NNIINN = NIIN NameDescription = name The process: compare the table field of ReferencePartNumber(Db) and PartNo(XML) and if it matches, then update the other XML elements to match those value in the respective Db Field.