Convert Wordpress DB dump from 2.01 to 2.5.1

The job: Convert Wordpress database dump from Wordpress version 2.0.1 to Wordpress 2.5.1. The dump is from a small blog with maybe a few dozen posts. Source: DB dump file, UTF-8, zipped, sent via email Target: same format Success criteria: * Everything intact, especially the categories * It must be possible to import the delivered dump file into a standard Wordpress 2.5.1 database without changes. DB is MySQL 5.0, UTF-8, Linux * delivery within 2 days of project start I already tried it myself, but somehow I always lost the categories during the upgrade process.