Taken from the Chat Announcements blog:

DirectX 9.0 Direct3D Graphics with Visual Basic .NET
Tuesday, April 26, 2005 from 1:00 - 2:00 P.M. Pacific Time (Additional Time Zones)
Hosts: Tom Miller and Adam Gallant. More to come...

Do you have questions about how to best use Visual Basic .NET to program DirectX 9.0 graphics? Are you unsure when to use a particular Direct3D feature? Join members of the Visual Basic and Windows Graphics & Gaming Technologies teams and discuss how to leverage the power of DirectX 9.0 from Visual Basic .NET.

You can view this announcement on Microsoft's main chat page, or add a reminder to your Outlook Calendar.