How to remove sections of custom_index

Ok so I have a problem, I'm getting ready to bring my site live tomorrow, I've done a lot of modifications and I forgot one thing. I needed to remove the latest files, bookmarks, and blog post widgets from the cutom index as well as move the latest members one to the left column with the latest groups widget. So as you can see I need help =)

My site is online at so you'll see on the index what I'm looking to do. I also employ a theme and the stats plugin. Thank you for your help and I'm trying to do this without having to install a plugin =)