A family of Microsoft relational database management systems designed for ease of use.
Try:
DoCmd.RunCommand acCmdAppMinimize
it may also be worth your while to take a look at:
http://www.mvps.org/access/api/api0019.htm
Daniel Pineault, 2010 Microsoft MVP
http://www.cardaconsultants.com
MS Access Tips and Code Samples: http://www.devhut.net