Looking for a small-scale library SW

Hi, I'm looking for a SW which helps to keep track of user's documents and projects. There is about 400000 files in my home directory and often it's time consuming to find a report which I wrote e.g. two years ago when I don't remember the name and location of the file anymore. Some kind of a simple database (with powerful text search) that can keep a project annotation and location would be nice. Any suggestions? -- Alexandr.Malusek@imv.liu.se