Naming convention for electronic document holdings

[Repost]

I've recently been hired to help create a corporate library catalogue and
electronic document holdings - using SharePoint 2007 for both.

When cataloguing/uploading the files, I will also rename them to help with
finding duplicate docs, version variation, etc.

Does anyone have experience/ideas for creating a naming convention that
would work for 5,000-10,000 documents (internal and external reports,
articles, etc.)?

It would be wonderful to learn from others' experiences to help make this
project a success!

Thank you for your responses ~
Dawn