I use CorelDraw for all graphic designs (buttons, icons, panels, borders etc.) Save your graphics as PNG file (transparent option).
All buttons will also be available as blanc buttons so you can label them with use of iPronto-edit.
For channel logos I recommend this website ([Link: lyngsat-logo.com]
) and specific page. Use the logo pages "by country" (point, right-click, save as BMP) the saved size fits 1:1 in the channel panel.
Here's an update of my current progress: [Link: avenue.gorredyk.nl]