[tbworld]

Just a few suggestions:

Forum Titles: Write a quick query against the "forum" table, use the mysql string function UPPER.
forumhead Text: Use the vbulletin phrase editor or modify the template.

If your not worried about multibyte or language interfacing, then just modify the template.

Just thought of it, this is probably the easiest method.
Override the CSS for forumhead and use "text-transform:uppercase" after identifying the selectors.

I didn't test it, but it should work.

Add this to your additional.css.

.forumbit_nopost .forumhead .forumtitle, .forumbit_nopost .forumhead span, .forumbit_nopost .forumhead .collapse, .forumbit_post .forumhead h2 span {
  text-transform: uppercase;
}