The word is "there's," starcraftmaster. "Theirs" is a reference to possession and not that act of existing.
You need the specifications of the machine to see what graphics card you have. There are both proprietary and free drivers,
which are available. You just set the refresh rates and nothing more.
And again, as I ask others on here, "Why didn't you go to linuxquestions or ubuntuforums to ask this question or to search for the answer?"HTtp://www.google.com/linux
<--Look for the answers here. Put the search query in the box, add or remove boolean terms, and hit enter.