Quote Originally Posted by Hack
You can package anything you want in your installation program.
Far from true actually. Many Microsoft and 3rd party components are licensed under terms ranging from no-redist to limited-redist to redist-under-conditions to "anything goes if deployed to Windows." Lots of stuff people run on Linux under Wine for example violates Microsoft license terms.

But IE in particular is not legal or safe to install by picking out random component files. One place to begin might be Licensing and Distribution.