I want to create a plug-in for personal use cause i dont think anyone else will need it, but I don't know any C++ or anything like that, so I was wondering if there was any programs where i could just type in what I want it to do and it will do it for me.  Also, I need one that allows me to make a template with commands.  Do you think I could do it with Macromedia Flash MX 2004?  Or no?

You can only make plugins using a programing language that allows you to compile dll's. Even then there is only a few languages that can compile dll's that are compatable with plus.
The only languages that have sucesfully been used to make plugins are: VB, C/C++, Delphi, .net languages, and ASM i think.
All of these languages require some programing knowlage, and you can use an editor like flash mx to make the plugins simply.
So in short, the only way to make a plugin is by learning one of the languages, and reading the plugin api documentation. I would recomend VB if you are new to programing.

your could use  UPDATED: vbscript plugin host to Scripting Host V2 for MP!3 (with JScript support) to create a plugin to do simple things, without having to use a full programming lanaguage like VB, C++ etc