Alt+Tab Not Showing Correct Icon

All,

I have created an app. I have created an icon1.ico for my app, both a
16x16 and a 32x32 version.

I have placed a NotifyIcon control on my frmMain and indicated that
the icon is icon1. When I minimize frmMain (the entire app), icon1
appears in the notification area.

I have indicated that icon.ico is the icon for frmMain. When I
minimize frmMain (the entire app), icon1 DOES NOT appear when I use
Alt-Tab - the standard VB icon does.

Any idea why and how I fix this, or explicitly state what it should be
in code? It doesn't seem like I should have to, but...

Thanks,

Patrick