System Requirements 
Minimum Requirements

vBulletin is a web-based application and as such has a few minimum requirements. To run vBulletin, you need a web hosting provider that includes the following things:Most hosting providers have already installed these applications on their servers. With the above requirements meant, the vBulletin software will run on any operating system using any modern web server software.

Recommended Requirements

The following settings and software packages are not required but will make your vBulletin experience more enjoyable. Your hosting provider can tell you whether these are available on your server.Once you have a web hosting package meeting the minimum requirements, you are ready to proceed with vBulletin. For help in finding an appropriate web hosting company, please view our Hosting Options forum.
Please note that modern websites are driven heavily by media which takes space. The more hard drive space you can get with your hosting package the better for the growth of your community.
User Contributed Notes: System Requirements