I've been using a CMS called Coranto for several years on my website devoted to role-playing games (www.gamebanshee.com), but it isn't supported much anymore and there are several features that I'm looking for that I'm confident Drupal can provide. Therefore, I'd like to get a few quotes for what it might cost to install Drupal (6?) and convert my main homepage, all previously posted news items, and all articles (interviews, reviews, etc.) to Drupal while retaining the same look, feel, and functionality. If possible, I want to keep my vBulletin forum and my game-specific subsites (such as www.gamebanshee.com/baldursgate/) with all of their static PHP pages as is.
Currently, I have about 20,000 news items that are stored both in Coranto's plain text database file and in a vBulletin forum that I use for user comments. I also have approximately 100 interviews, reviews, and other articles that are stored in static PHP files. Each news item is linked to vBulletin for commenting purposes at the moment, but after the migration I'd like to utilize Drupal's comment system with users able to use their vBulletin ID for posting.