Yes, what are you referring to when you say "older model"? Are you referring to your video card's model? If you are, then yes, if you want to change it, you'll have to open up your computer case and exchange the video card seated in your AGP slot/one of your PCI slots with another one. This is assuming that you have a video card that isn't integrated onto your motherboard. If you have an integrated video card, then you won't be able to change it (well, not easily I guess).
If you're referring to your video card's model, I was going to ask why you want to change it, but now that I think about it, probably one of the best ways to troubleshoot this problem is to try using another video card. If you're going to do this, make sure that before you physically install the new card, uninstall the drivers for the old one. Install the drivers (preferably the latest version of them) after putting in the new card, then try the game again. If the problem doesn't occur with one or more other cards, most likely the drivers for your old card were corrupted or not installed properly, or the old card is simply defective. If the problem still occurs with a completely different card and completely different drivers, then your problem could lie with other software you have installed, including Windows, or it could have something to do with the "heart" of your computer, which is your motherboard. In that case, personally I would try using another motherboard in the system and format the hard drive/reinstall Windows from scratch.
How long have you had this vertical line problem with Warcraft III?
You should consider the following suggestions before experimenting with a different video card (yes, they were copied and pasted from a post I made in another thread)
Do you have the latest drivers for your video card installed? Your video card drivers are the software that Windows uses to "communicate" with your video card. You can get the latest version of those drivers at your video card maker's website. To find out what kind of video card you have, follow these steps:
- Right-click on the My Computer icon on your desktop and click Properties
- Click the Device Manager tab
- Click the plus sign next to the Display Adapters category
- What's listed there is the video card you have installed in your system
Do you have the latest version of DirectX installed? DirectX is a Windows API (Application Programming Interface) that almost all games designed for Windows 95 and up use, including Starcraft. You should have the latest version of DirectX installed for optimal performance and stability with games that use it. You can get it here:
http://www.microsoft.com/directx/
Is it possible for you to take a screenshot of what you're seeing and upload it somewhere for everyone to see?