I meant the text to be idion, not you π
Anyway, you can open these files simply with a text editor like Notepad (never with a word processor like Word or something!).
But the easies way is to right click > save as > and navigate to your Program files / Google / Google SketchUp <version number here> / Plugins directory and save it with an rb extension (IE might not ad this automatzically). Never change the file name though!
Then restart SU and (depending where the script registeres itself) you can find it somewhere in the menu system (mostly under Plugins but some go to the Draw or Edit menus or to the right click menu).