I know this is a bit of an old post but did you ever find a suitable script? I'm asking because I just found something I had a while ago called a wu-name generator if you've ever heard of such a thing.
It uses a couple of files for the content and they can be opened in notepad (or whatever) and edited as needed, no database involved, just php script. I can't remember where I got it from in the first place though so if there's any copyright issues I'll remove the download.
Any good to you (or anyone else)?
Demo | Download
If I can't be a good example, I'll just have to be a terrible warning...