Helen_07,
Well, you have two possibilities: Outdated or unsupported. These are two
different issues.
To note what video card you have, right click on an empty space on your
desktop and select Personalize and then select Display Settings. In the
window that opens, select Advanced and note the type, number (like ati 9600
AGP, etc.), and name of you display adapter. It could be ATI, nVidia, Intel,
or something else.
With that knowledge, query the website of the manufacturer of your display
adapter and download and install the latest driver for it. In some cases,
such if you're using a laptop, you may have to find the latest driver at the
website of the manufacturer of your computer. Thus, you need to do some
research to be certain.
after you do all that, run the game again to see whether it works. If your
graphics is unsupported, it still won't work. If only the drivers were
outdated, then it should work for you. Before you do all that, you should
likely review the requirements for running that game to make sure you're not
spinning your wheels.
Another approach, if your system is unsupported, is to install a video
adapter that is compatible, but that's another story.