Can i do these things ... ?!

[Dr.WhO]

Hi ...

Iv got an educational website for students, but most members see the site difficult to handle so I decided to change the site & built it based on vBulletin forms but it should have some characteristics that im looking for if its got them id like to start building the site right away.
First im asking if there is a hack or something for a download center (a large one) so I can put every subject in a forum & down the forums name is the download section for this subject (notes & other files)
Second if there is a quiz hack, id like it to be down each forum like the download center (MCQs & T&F)
Third iv there is a multimedia center where members can see videos or hear audios streaming from the site
And last id like to add a chat such as flash chat (that I already have)

Im asking because I couldn?t find a full copy of the forum to test it on a local server before I pay for it & then upload it on my site


Best Wishes
www.101med.com