HOw do i find
 

the forum tables. I need this for a code i am trying to use. need help asap

Which tables ... HTML tables or mySQL tables?
HTML => look at the code ;)
Database => phpMyAdmin, or mysql commandline client if you got SSH access like hardcore SQL :D

all it says is:
Add these fields to forum table:
then its all code

As I don't know what exactly you are talking about I can only assume you are trying to install a hack and the instructions say you should alter table forum, eg. the instructions shows queries you should execute.
To do so go into phpMyAdmin if installed or ACP / Maintenance / Execute SQL Query.

alright I am back tracking because I followed the directions up to that point it told me to find something and then delete it and I did and now I am getting a error message
how well do you know this stuff?

Which stuff?

code errors and vbulletin itself?

nm I fixed it. thank you