Holla everyone, Does the product key on my windows OS help identify me on the internet???

Should one ever stalks me on a dial up connection, how can i stop them/hime/her from watching my online activities. Even if I use a high anonymity proxy, they can just about block me , all my traffic that is and if I use encryption, they block me so, how do I prevent them from detecting me whenever I am online cause evn if I use a different ISP on a they are there.... I'm a novice so pleae forgive my lack of knowledge .....I need your help