Im guessing that you are talking about installing Virtual Box.
You should be installing Ver. 3.1.4 i reinstalled Virtual Box again to find out if the new Version of Virtual Box was different from the video I made, and to find out what software you are speaking of.
I found no extra software and the install didnt ask me to install any extra software.
Your install should look like the video leaving everything at its default / no extra software.
Please let me know if I can be of anymore help
I to have wonder that, as far as i know i don't believe you can do this in virtual-box, although i maybe wrong and.
The last time i did a search on this topic i found a post dated Tue, 20 May 2008 23:01:13 saying that (VB) needs this feature added, but still cant find any change i will ask this on my podcast (BBTAS)and maybe some of the listeners will known