HEllo
new user here and i have tried to download a screen saver which it didl. and saved into roots in the files.. but once i get there im having a hard time figuring out how to open it to use it as my screen saver!!someone help!

What's the filename and what do you mean by roots in the files?

If you tell us what distro you're using it would help us to help you.

Since we don't know what distro or window manager you are using, try these generic instructions for adding new screensavers.

Installation example for 3D matrix

Unpack the tar.gz file and change directory to the extracted folder.

Run the console with root privileges and run matrix_gl with "install" switch.
In "Control Centre" choose "Look and feel"->"Screensaver" and set to the Matrix GL

BTW, the matrix 3D is preinstalled in most linux distros. Just follow these instructions for the screensaver you want to install.
If it does not work, reply here with the distro and window manager you are currently using.

- Cheers