I have a W2k Network, but not all the PC's have IE 6 SP1.

I want to distribute it to all the pc's where it isn't installed, but I don't want the users to do anything for it...

What I want is the following:

A complete unattend setup of IE 6 SP1 (I allready have all the files)
No dialogs
No reboot

Anyone knows if this is possible, and how to do it??