Creating a Semi Transparent Static Element for a Gauge

Hi,Perhaps someone can help me here.I'm using Easy Gauge to create a gauge.I'm trying to create a gauge that sits in the windshield. I want the gauge to be semi-transparent, so you can see through it and view the outside world, but still see the icons on the gauge.Essentially, I want it to look like the FS2004 ATC dialogue.I'm using Paint Shop Pro, and I've tried using RGB 0,0,0 for the inside of the gauge, but to no avail.Any ideas?Bry