Installing Internet Explorer

I have a kind of silly question, but here goes.

I have a dialup connection that is shared in our office. I want to upgrade our browser to IE 6 sp1. I want to know where you can find a full download file on the Internet. I only can find the partial download. This means that our internet connection has to be running for long periods of time to download the upgrade on each computer. Can someone please tell me if there is a full version download and where I can find it?

Thanks