Apache URL Rewrite

My Magento product? URL's? look like this:? [login to view URL] I need? them to look like this: [login to view URL] 1)? I need to have the category information removed from the product URL. 2)? The dashes replaced with underscores for the category, sub-categories and product URL's. Previous Magento experience in? rewriting required. I am using Magento ver. 1.2.0.1. ## Deliverables I would like the coder to suggest how long the job will take.