Personal Computer Use Profile

I use my computer for mainly personal and school related projects. Sometimes I use it for work only when I need to obtain information about a piece of equipment and usually that uses internet explorer. Most the time Im online I like to download music from zune and get online useing internet explorer. I also use all the microsoft applications such as powerpoint and word for school, sometimes spreadsheet. I know how to use a basic virus protection software. I use norton anti-virus and it seems to keep my computer pretty clean. I would like to learn how to use CAD software a little more throughly on my computer. I know how to add more hardware such as RAM and harddrive space.