First off: RELAX!
Second: The settings for the on board video are in the BIOS. To access the BIOS reboot your computer and at the post screen (when you here the little beep or the BIOS info flashes on screen for about 2 seconds) press F2 or DELETE I can't remember which one award uses.
After that you will be presented with various options. Look for settings under display or video. Use the command keys as outlined at the bottom of the BIOS screen to navigate through the options.
When you find the settings for the video ram just change it to a higher setting
Keep in mind that with on board video you will sacrifice system ram by increasing the video ram.