Unique url for a wordpress blog?

I run a wordpress blog.. And I'm considering submitting by blog to Google News, now Google says each of your websites page's needs to have a unique url with atleast 3 numbers.开发者_运维百科

how should I get this done? Is there a particular wordpress plugin that'll do the job?

Regards,

---

You do not need a numeric ID in your URL if you use a news sitemap. Here's a plugin for automatically generating one.