Both VLookup and HLookup are functions from Excel. This newsgroup is for
questions about Access, the database product that's part of Office
Professional.
If you're using Excel, you'd be best off reposting this question in a
newsgroup related to Excel.
If you're using Access, there are no VLookup nor HLookup functions. The
DLookup function might fulfill your need, but you'll need to explain how
your tables are organized before any of us will be able to help you.