Microsoft Visual Studio .NET 2005Just download and install.
Create a new project, and paste all your script files in it. (for full functionality, paste the server files in there too.)
This will highlight code, auto-tab, and most importantly, highlight syntax errors! It maps all the classes of the server, and when you begin typing, it will open a drop down menu where you can select from a list of possible choices.
You can also right click on pieces of code, and go to the definition. Makes it easy to navigate to any part of the code so you can edit the right piece. (if you have server scripts in the project, don't edit those unless you compile the server yourself.)
PS~ Arte, feel free to pin this.