Using Access 2000 in Windows XP

[Steve]

I am trying to run a multi-user dbase which I
painstakingly updated from Access 97 to Access 2000, on
workstations running Win 2000 and Win XP. My dbase runs
fine on systems with Win 2000,but with XP I get the
following error "Undefined function 'Format' in
expression." This is the syntax in my Query : Noti Date:
Format([Notification Date],"mmmm","yyyy"). I have also
received the errors on queries with "Left" function in
them.