Need some help/advice with UIBuilder

[Adder]

I am in the long learning-curve of UIBuilder (and XML in general) and am picking up the intricacies slowly but surely through research, these forums, and trial-and-error. I even have a few mods nearly completed. Two things are giving me nothing but headaches though... Fonts and Graphics. I just can't seem to get UIBuilder to use the ones that I am attempting to use. No, let me rephrase that - I can't figure out how to use the installed fonts and graphics such as the special elements or small fonts. Some of the properties under the tabs are named copyandpasteme for instance. Copy and Paste what? and where? And how do I add custom frames and elements from within UIBuilder?

I have read all of the stickies here and all of the documentation that I can find, but nothing really goes into any detail on these items. Could any of you Gurus here give me a few pointers? Or even direct me to a detailed reference that I may have missed?