IBM iSeries Data Provider for .NET

IBM has released a .NET Data Provider for the iSeries, formerly AS400, family of servers.  It comes with the V5R3 version of Client Access.

http://www-1.ibm.com/servers/eserver/iseries/access/dotnet/

http://www.redbooks.ibm.com/redbooks/pdfs/sg246440.pdf

Wally