CMS Made Simple Forums

I'm tryng to build a portal based on cmsms that integrates with other apps (Vbulletin forum). On this purpose I include global.php of vbulletin (the core script) in my pages using user-defined-tags

I suppose the problem is that either cmsms and vbulletin uses a class named $db so when I try to use code from the vbulletin framework it fails: Fatal error: Call to a member function on a non-object in /forum/includes/functions.php on line 1041
which is a call to the db function: Is there any solution in order to use both cmsms and vbulletin framework thogether (db class) ?
THanks in advance for your help: being not a good coder myself need help 

I'm having the same problem. I'm disheartened to see that your topic received no replies. That doesn't bode well for mine.

If anybody else comes across this thread in a search, here's what I did as a solution.

I put an iframe on my site. You can see the results in my sig.