Guys,
download these IDES, they are cool.
1. Netbeans, can be download from www.netbeans.com
2. Allaire kawa, can be download from www.macromedia.com
3. allaire homesite, can be download from www.macromedia.com
They all comes with code coloring, and auto-code completion feature. You only have to type a object, or variable name, and it will pop up all the available methods for that object.
I highly recommend Netbeans and Kawa. If you are doing java programming, also try the Jbuilder.