excuse me for my bad english

I´m beginner in the Made Simple CMS. I would like to create template. It´s easy, when I do it from Administration system (menu View, Templates... styles...). But I would like to use my favorite PSPad for editing HTML and CSS code. Is it posible?? How? I´m not able to find files and folders of templates, e.g. one specific folder for one specific template, CSS file of template etc. Please help me

thanx.