Problems with $navbar and functions.php!

Hey, I was hoping someone might be kind enough to help me out here!

I've moved all of my forum files to the root of my server and re-named index.php to forums.php - because I have MyVbIndex installed. As a result, the Navbar displays the following format in Showthread and Forumdisplay.

BBTitle* > Cat A > Cat B > Thread

*This obviously then links to the MyVbIndex page [index.php].

What I am trying to do is change this to the following format...

SiteTitle > Forums > Cat A > Cat B > Thread

...only on the Showthread and Forumdisplay - the way this is for every other page works fine.

So far, by looking at functions.php I have been able to use some variables and the following HTML to replace $navbar in Forumdisplay.

<img src="{ imagesfolder}/vb_bullet.gif" border="0" align="middle" alt="$bbtitle ? Tell someone who cares!">
<normalfont>
<a href="index.php?s=$session[sessionhash]">$bbtitle</a> ? 
<a href="forums.php?s=$session[sessionhash]">Forums</a> >
$foruminfo[title]
</normalfont>

This works alright [example here], except for the fact that it only shows Cat B - [i.e. the highest sub-category - shown in this link, a sub-forum of the first link]. I am unable to use the same approach for Showthread, or at least, make the Cat A, Cat B e.t.c. a hyperlink, because I don't think there is a variable that will determine the ID of the forum the thread is in, in order to create a hyperlink.

Does anyone have any ideas on this, or know of a thread that can tell me how [I've looked, but couldn't find any].

Thanks to everyone in advance.

[FleaBag]

Poking about in functions.php I see there is a function regarding 'altnavbar' which as far as I know, is un-used. I tried fiddling about with this to no avail [I know hardly anything about PHP] - does this mean anything to anyone else?

[FleaBag]

Nevermind, I worked out how to do this with templates instead. Easier on all fronts to be honest.