The_Dudester is right there, wacky. With win98 you can add up to 9 monitors to one system. Either by adding more video cards or getting a multi port card like the Matrox G400, which has 2 video out monitor ports.
Windows just expands the desktop over multiple monitors. So now I've got (1280*1024)+(1152*864)=2,306,048 pixels to fill with whatever i want
You can drag windows from one monitor to the other or when you're working in Photoshop for example, you can let the 2nd monitor blow the picture up so you have less problems when you're doing "pixel surgery".
I wish I had more room for video cards; I've got a couple of spare 15" monitors I'd love to add
Anyway, I'm very pleased with working on a multiple monitor system. I can recommend it to everyone, especially if you work alot with programmes like Photoshop, 3DS max, Flash, Visual studio 6 C++, or Director, etc...