Yes
true
server manager
yes you can configure many roles to a machine(DC) depends on the H/W capability of the machine whether it can handle the load on not.
There are many proxy server packages available; each has their own method of configuration. You need to be more specific as to the one you wish to configure.
In windows 2008 you can install 7 configure WDS not RIS support.
Server manager
See related links.
You can't in the game but if you are playing on the server it is possible to get a girlfriend on server chat.
I using computer internet and server handy cafe but handy not contact register.
With help
Go through ServerManager or the OOBE tool.
Find the proxy server service you want and retrieve the packages. Then, install the package. The final step will be to configure the proxy.