To the original problem.... maybe the terrain is messed up, is that on all terrains or only in ma?
Maybe the ah2 cache is messed up. Run checkdisk and delete the contents of the cache folder in ah. Also might be graphics driver... when it is xp download the newest one and follow the installation process.. removing old driver & installing new one... detailed description is on the website where you get the driver and comes with the driver.
Make sure to get the normal driver that runs without the .net framework.
On a second thought you say it worked before... since when does it no longer work, it came with a specific terrain or with a ah2 patch or with a driver change?
AH2 settings.... might try to change texture size to a lower lvl.... then ah2 recalculates the cache... see if its gone then.
Now to the hijack...
Skuzzy wont tell you how to do it if hes smart...when you dont know it already you probably have no experience in the bios settings might want to ask a friend who knows his stuff to come over... but make sure he changes only one setting at a time....other than that might as well learn it yourself.
Bios... when the computer starts it gives a hint which key to hit to enter it (mostly del some f10... if the monitor is slow to start wont see it, reboot in windows and you see it).
Then you can dial through the menues (enter to enter submenu, esc to leave submenue, up/down arrow to select an item and pg up / pg down to change a value in most boards, esc two or 3 times to exit without change and f10 to exit with change, might be diffrent on non standard bios) and look for "AGP" there will be a setting for aperture size and a setting for the multiplier.
A word of warning, when you change the wrong setting here your comp wont boot anymore or eaven worse, wont let you change it back.
But before that make sure to check what your graphics board supports.
And.. only change one setting at a time, then see if it still works. if it doesnt you are up for trouble since some cases it is impossible to change it back when the bios no longer shows up.
For example, when you change to 2x agp and your graphic card does not support it then you will no longer see the bios screen... makes it hard to change back. Usually there is a reason why it is set to 1x ... but not always.
For the case you mess up... can reset all settings with a jumper.. but then you need to change all settings again to the values they were because with the reset they go back to default instead of to what they were. Also.. when you have a pci graphic board you can use that if you mess up agp settings.
Hope this helps.. if there is anything unclear ask BEFORE you touch it (and open a new thread).
Of course... when you change it wrong you can damage hardware, make the comp forget your harddrive or no longer boot... dont blame me)
cheers