In order to make your own fonts, you'll need a program like Fontographer or FontLab. Both programs are fairly expensive. It would be best to use FontLab since they have a free demo for you to download.
The program is über complicated and I'm still trying to figure it out. There are some good instructions on the Font Lab Web site.
Basic Instructions:
These directions are very general, but at least they give you an idea of the font making process.
Basic Instructions:
Modifying a font is a lot easier than creating a new one from scratch, because you just open up an existing font in Fontographer or FontLab and edit it. You then save the changes to the font, and you've created a new font from an exisiting one.
Good Luck!
Here is an "absolute" box, which stays at the col bottom.
AP again. The side cols have bottom padding to avoid these boxes.