Build the background in photoshop and or vegas and Photoshop. Make sure that you build the drop shadow in to the background. Here is a sample of a Vegas/Photoshop background. No drop shadows, but there are some other interesting things.
https://www.albatrossmedia.com/images/Digital%20stuff/govcup.wmv
Right click anywhere below where it says menu on the DVD work area. Choose set media and select your photoshop file or Video from Vegas.
Now since you have put de-defocused black boxes where you are going to place your Icons, you will have a deop shadow ready to go.
If you have trouble E-mail me and I’ll send you a sample.
Dan Achatz
dan@albatrossmedia.com