Some will understand this conversation, some will not, but here goes.
A: What is Internet Explorer?via Digg.
B:The program you use to DL Firefox.
By the way, if you are interested, get the Internet Explorer 8 Beta. It's available now, and is a better browser than the previous versions. But no matter what, Firefox (and Opera) are still my preferred browsers. For the uninitiated, read my "review" of Firefox here.