XML -> SQL Server 2000 via VB6

I am working on a vb6 program that receives an xml feed and inserts into a SQL Server 2000 database.  I used XmlSpy to create the database structure from the XSD, and it resulted in 51 tables.  The xml feed that will be received may or may not have data for each one of the tables (most likely, none of the xml feeds will have data for all 51 tables).  I used the stored procedure wizard to create the insert stored proc for each table.  Can anyone tell me where to go from there?  This is my first programming exposure to XML, so any help would be greatly appreciated.