You might want to ask at the VG.net forum:

http://www.vgdotnet.com/forums

I designed that app, and I am no graphic artist, but if you use VG.net, I
can provide enough tips on the VG.net forum or blog so you can create nice
label boxes. Or maybe I'll just make one for you. Those are fairly easy. By
the way, did you see the description of the Transparent buttons on the blog?

http://weblogs.asp.net/frank_hileman/archive/2004/05/10/129387.aspx

That shows you can create nice effects without much effort. It is easier
with a graphical designer.

We are working on some path gradient enhancements that will make 3D effect
components even easier to create. Plus we will include more samples like
that dials demo.

I imagine books discussing Photoshop or Firefox techniques might be useful.
Some of the inspiration for the look of that demo, and the 3D knob controls
you see on the VG.net blog, came from hardware devices -- specifically
musical hardware.

Regards,
Frank Hileman

check out VG.net: www.vgdotnet.com
Animated vector graphics system
Integrated Visual Studio .NET graphics editor