Thanks for pointing this out Kristie, I overlooked it.
< span class="whatever>yourtext< /span>
...is how vBulletin 3 uses css classes for just about everything. I wrote this up for vB3 and this is a legacy of that. I've updated the install file so it should work with pre-vB3 forums.
you need to replace:
Code:
<b /><span class="normalfont">Who's in Chat</span></b />
With:
Code:
<b><font size="2">Who's in chat</font></b>
There is another instance further down you'll need to alter as well, take a peek in the updated install file if you need help.