I have never been able to successfuly edit these components (or any component). I double-click on the component, select the skin I want to edit ("List_Skin"), and the only successful thing I can do is change the colors.

I am trying to remove the rounded square for the listbox component skin and replace it with a hard (no round edges) square. However, when I do this the alignment goes to hell, sometimes as much as 10 pixels. I zoom in about 800% and line everything up exactly to where it originally was, and it still never works.

Anyone have any tips or info on how to edit component skins? I have a text area and a listbox next to each other and it looks stupid with the listbox having rounded edges and the text area having hard edges.