Twin-view in Linux Red-Hat?

[Twin-view in Linux Red-Hat?]

Hi, I'm running Red-Hat 9.0 and I wondered if there is any way to clone your desktop to another screen or if there is some program that can do it?

When I used Windows XP I used TvTool. Is there a version of TvTool for Linux?

[Kernel problem]

Hi, I am very new to Linux, and I have just downloaded RedHat 9.0 and updated it. When I updated it I also updated the kernel from an old version to a newer version. The problem is that the new version doesn't work properly. If I boot with the newer kernel version it works fine at first, but when I want to shut my computer off it hangs when trying to close the eth0.

This does not happend when I boot with the old version of the kernel.

 

Can I delete the the newer kernel somehow?