I think that VS (any version) is way overkill.
What features of VS make you want to use that. Using VS for just that is like using a NASA supercomuter to add two numbers and print them to the screen.
I find that any text editor with syntax highlighting will serve you well for javascript coding.
Some examples are TextPad(my favorite), Programmers Notepad, Notepad++, or even just standard notepad.
If you are looking to debug javascript (step through code) which Visual Studio does now have, I would recommend using the following tools for firefox:
- Firebug
- Web Developer
- Console [sup]2[/sup]
If you insist on VS, you don't want a windows application. You want a website.
File->New->Website->(VB or C# doesn't matter for you).
It will create a bunch of files you don't need, but thats okay. Then you can just add a javascript file and work with it that way.
*Note: You have to have full Visual Studio suite or Visual Web Developer in order to do this.