after browsing to that folder, extract the file called 2DA to a folder on your computer. (You will need either WINZIP or WINRAR for this)
To help ease of editing, click on one of the 2da files, right click on it, choose OPEN...select NOTEPAD, and be sure to check the box that says "always open with..."
Now, all you have to do is double click on a 2da file, and you can make any modifications that you need to make.
10 - A Masterpiece, Genuinely Groundbreaking 9 - Outstanding, a Must Have 8 - Excellent, Recommended to Anyone 7 - Very Good, Deserves a Look 6 - Good, Qualified Recommendation 5 - Fair, Solid yet Unremarkable 4 - Some Merit, Requires Improvements 3 - Poor Execution, Potential Unrealized 2 - Very Little Appeal 1 - Not Recommended to Anyone