working on my new blog and...

[Lego Boy]

I am working on a new more secure version of my blog, and I need some help with fetching information when a user is logged in. There is one table for user information, one listing all the blogs, one for user permissions linked to a blog, and one for actual posts. What I need to do is load all posts from one or more blogs with the permissions that the user can do (returned in two variables for write and admin) such as allow the user to write if they have write permission to a blog, allow the user to edit a post if they are an administrator, unless the post they mean to edit was posted by another admin of that form, etc... I hope this makes sense. Thanks for your help.