Custom wordpress permalink for portfolio pages

Here is the theme I have: [login to view URL] Basically, if I change the permalink structure to "**/%category%/%postname%/**", above link will become: [login to view URL] It's a url of a portfolio page, but I want to remove the "/portfolio", so it will looks like: [login to view URL] Further more, in this theme, I can assign category to a portfolio, but the category name will not be displayed in the url. So I also want you to display the category name in url, for example, if above page is in "comics" category, the url will be: [login to view URL] You know what I mean? All work can be done on my hosting server. my blog: [login to view URL] I also attached the user manual of this theme, if you want you can read it. ## Deliverables coder must let me know which files you edit or add when you complete the job, so I can make sure I can do this again on other blog.