Well, you are using RPG Maker 2000, I take it?
I'm not quite sure what you mean by tools, but are you refering to tool to create graphics?
In that case you can use almost anything, even Paint that is shipped with Window. Personally I prefer Fireworks MX, though a lot of people swear to Photoshop.
I would suggest you take a look through the net and find a site dedicated to RPG Maker (there are different versions of itt) and ask on the forums there as you are more likely to get relevant answers.
I don't mean to sound like a shameless plug, but you could always visit my forum on
Developer Dimensions as this is an RPG Maker site.