Aha, Metacontacts. I saw that when trying to figure it out, but I couldn't make it work. I finally figured it out.
I noticed this image from the kopete website: http://kopete.kde.org/pics/shots/kopete_…list_0_10_9.png It looks like each contact in that list is listed only once, with the different account types all tied to that one contact. I know my terminology will be confusing, but you'll see what I mean if you look at that image. Anyway, after seeing that image, I've been trying for hours now to figure out how to make my Kopete window look like the image. How is that accomplished?