I just wanted to give you a bit more info to your first question. I don't know if you have found this out already.
If you want to use a personalized font with your skin, all you have to do is include it with your skin by doing the following:
+ Create a directoy for your skin.
+ Find the font you would like to use.
+ Place the PSD file and the font file into the directory.
+ Highlight the two files. Do the following:
+ If you have WINRAR, right click the files and select "Add to archive...". When the window appears, change the extension in the filename box to .xsf and click OK.
+ If you have WINZIP, right click the files and select WinZip > Add to Archive. Change the filename extension to .xsf as in the last example.
Voila! You should have a Xion executable skin file. Double click and enjoy!