Simple solution would be to set up a localhost environment with the WP version of your database dump ....i.e. if you took the dump at say WordPress 2.5 then install that version on your local machine and import the database. (This assumes you know the WP version at the time of dump)
But before you do that - open up the sql dump in a notepad (I recommend Notepad++) and do a find search for plugins. This will return the section of the dump listing the active plugins at the time. Install them prior to importing the sql tables.
From then on you can upgrade chronologically updating the database and the plugins - removing those plugins which are no longer compatible as you go along. When you are up to date simply transfer your site to a live staging environment and you are done.
You can get the relevant WP release from http://wordpress.org/download/release-archive/
Hope that helps somehow,
Zulf