First, use the configuration options in Fallout 3 Launcher. You want to establish a base line of expected performance for your system so that later on you will know when a mod is mucking things up. Pay careful attention to its installation instructions and double-check the file paths when you install it. Note that Fallout 3 Stutter Remover is a FOSE plugin, and its installation will be different from anything else you encounter. These two are both a little trickier than the first ones, but the instructions that come with them should be sufficient. Install the 4GB extender and the Fallout Stutter Remover. We'll get around to what those are for in a minute, but for right now just get all of them and install them. Install FOSE, FOMM, BOSS, FO3Edit, and Fallout 3 Configator. Let me try to save you all that trouble right now. It would have saved me a lot of frustration down the road. I really wish I had talked to someone experienced with modding before I started.