Access 2000, Access 2002 and Office Access 2003 create a Microsoft Jet 4.0 format database file.
ref: http://support.microsoft.com/kb/303528
I suspect that the actual version of the Jet 4.0 provider files (DLLs, etc.) would depend more on the OS + Service_Pack and Updates since Jet is a core Windows component (i.e., it is included in a vanilla Windows install).