Notes about Images
Images
Because of the way PediaPress handles images, it's best if you put "Figures" into a paper like so:
<center>[[File:Sess-figure-1.png]]<br /> '''Figure 1. NVD's reported cyber vulnerabilities<sup>2</sup>'''</center>
Which should give you:

Figure 1. NVD's reported cyber vulnerabilities2
Code Figures
Code, it seems, is always handled OK, as long as you put the double spaces (MediaWiki standard) before it and then follow it up with a caption like so:
<center>'''Figure X. My Code'''</center>
Tables
Tables, it's best to do like normal MediaWiki tables, but you'd want to do the caption above, like so:
<center>'''Table Y. My Numbers'''</center>
And then start off with code like this:
<center>'''Table 1. Code Metrics for iTrust Fall 2007 (7707 LoC in 143 classes Total)'''
{| class="wikitable"
|-
|'''Package'''
|'''Java Class'''
|'''LoC'''
|'''Statements'''
|'''Methods'''
|'''Variables'''
|'''Test Cases'''
|'''Line Coverage'''
|-
</center>