1.start SUO
2. under file select load file
3. find script u want to READ ( please note SUO defaults to .txt and some files are .euo)
4. as TM said SUO will not run scripts. but it will allow a better development and understanding just by being able to use the right hand pane to bounce around subs, gosubs, and tags.
edit and almost forgot one of my most favorite features the syntax checker for when you have missed a stupid bracket or mixed bracekts and braces.