IIS Role Services for Package and Task Service (Site Server)

Hi,

is there any official Document what Role Services of the IIS are required to run Package and Task Service (Site Server) on Server2008 R2

I could find only find the following inscrution:

http://www.symantec.com/business/support/index?pag...

I have to setup ~25 Site Servers and would like to automate the setup with a script.

Thanks