A really useful plugin for WordPress 3.0 came out this week that allows you to set up custom post type permalinks for non-hierarchical permalinks which have the flexibility of blog post permalinks. If you’re already rocking custom post types in WordPress 3.0 then you’ll want to check out Custom Post Permalinks. Install and activate it and then you’ll find extra menu items available under the Permalinks Settings page.
Now you can have post type specific archives with all the same flexibility that you have with blog posts. This one is a must have!