Do you want to control your screens easily? That's possible, with Python-RandR.

Python-RandR is a graphical open source tool. It uses XRandR, version >= 1.2, a commandline tool. So in fact, Python-RandR is an interface (or frontend) for XRandR. XRandR is an abbreviate for X Rotate And Resize.

Python-RandR detects all attached screens. The settings of those screens can be changed "on the fly". For example, the resolution can be changed, screens can be cloned or extended to other screens. It is also possible to change the TV- signal, from NTSC to PAL as example.

Can I use this program?

It depends. Your videodriver needs to support XRandR >= 1.2. Not all drivers support XRandR >= 1.2 at the moment, unfortunately. Xrand >= 1.2 is at the moment at least supported by the open source drivers intel, ati/radeon and radeonHD. Also the closed driver of ATI offers the needed support. Perhaps also some other drivers support it. The closed driver of Nvidia don't support XRandR at the moment.

Note: Python-RandR is written for Ubuntu (debian). If you use a RPM packagemanager, you'll have to rebuild the debian installer to a rpm installer. This can be done via alien.