If you need to code directly against the Access 2007 database format you can use the Access 2007 database engine that can be downloaded for free.
2007 Office System Driver: Data Connectivity Components
This download will install a set of components that can be used by non-Microsoft Office applications to read data from 2007 Office system files such as Microsoft Office Access 2007 (mdb and accdb) files and Microsoft Office Excel 2007 (xls, xlsx, and xlsb) files. Connectivity to Microsoft Windows SharePoint Services and Text files is also supported.
ODBC and OLEDB drivers are installed for application developers to use in developing their applications with connectivity to Office file formats.