HELP, please!: minimizing forms to taskbar

I'm writing an SDI application with Delphi 3.0, and I want the forms to
minimize to the taskbar rather than as little minimized window bars.
Overriding TForm.CreateParams, and setting Params.ExStyle to
WS_EX_APPWINDOW will get it in the taskbar, but there is a project icon and
an icon for each form on the taskbar.  I just want 1 icon in the taskbar at
any time.  Can anyone tell me how to do this?