UBB.Developers Forums UBB.classic V6.4 - 6.7 Modifications Forum Design Integration CGI Pulls

I'm trying to get my UBB navigation set up to where I don't need to change it every time I change my navbar. So is there any possible way to get SSI to work across the entire UBB? I doubt it, being that cgi files don't get parsed, so on to my next question... Can it work to do a cgi pull into all the UBB pages, ending up with code similar to the below, then using $ variables to put the navigation where I want it? If this works I know I'd have to update threads every time I change the navbar, but that'd be easier than copying everything over like that. Any thoughts, or am I making any sense here?

And here would be the code I would want to be using:

eval {
($0 =~ m,(.*)/[^/]+,) && unshift (@INC, "$1");

require "/home/ira/www/templates/cgitop.txt";
};