The brand of the computer is irrelevant, it is more to do with the operating system and graphic capabilities.
I have not used a screensaver on my PC in the last 10 years and it is always the first thing I disable whenever I build or buy a new PC.
daffy, what I meant was, it was an option already available to me on my Toshiba when I bought it, and hey, not all of us are computer literate. Especially me. I am very thick when it comes to technology I'm afraid..... I can press a button and that's about it.