I like the Modifications page as the categories and forum descriptions are simple and clean. As for the main Forum Home, well

...
vBulletin Discussions and General Discussions seem a bit redundant as it is displayed now. The majority of the discussions are vBulletin related. Anything General to me would fall under vB non-specific (e.g., HTML, PHP, CSS/JS, Perl...In which these discussions have nothing to do with vB) or community forums such as the "Lounge", "Big Boards", "Forum Commenting".
The word "Discussion" is also vague and it doesn't grab the user who's in need of help. Suggested words/phrases for forum descriptions and/or categories are "Help", "Questions" and "How Do I?". They could be grouped into several forums (which are easy to relate and to find):
Coding (anything vB code-related)
Designing (anything vB template/layout-related)
Graphics (anything graphics-related for the purpose of vB enhancement)
Articles/Tutorials (could also fall in this category)
Service Requests (coding/designing/graphic requests that may require a service fee)