Community Site - Web 2.0

I've bought the source code for this site, [login to view URL] and would like to do some extension, add-on and modifications to the script. Note: This site is not own by me. I would like to add a new feature such as found in the [login to view URL] where user can post article based on a topic. Note : This site does not need to be multi-language. But the [login to view URL] script is multi-language ready. I would like to use the database created on the site to be linked to forum so user can use the same set of username and password for the forum without registration. I would prefer to use phpbb for the forum but not neccessary. I would like the site to automatically pick up new/popular posts on the forum to be displayed on the site as well. It is not neccessary to use the existing source code(but preferable). You can create from scrath. But it depends on the price. If the budget set is not good enough, I am willing to increase the price. I am not sure if the script is able to automatically send email to user upon completion of registration. If it's not there, this feature needs to be added. I may want to modify the homepage template so it's flexible enough to choose the feature to be displayed, but not neccessary. For example, I can choose whether to display new/popular forum or new/popular video or new/popular article or any combinations. It depends on the complication and the price. This is a small project to test out your competitiveness and skill, etc. If the program is good, there is potential for JV to sell the script to the public. And if the website is successful and program is good, there is more extension coming, such as membership exclusive/protected area, job portal, etc all link back to the site.