What VoIP companies does asterisks work with


I’m new to all this and trying to figure it out, I have a couple of questions. I read Asterisks will not work with Vonage, if true, who will it work with and my other question is, is there any gui version of Asterisks, I hate having to do it all in command line.

asterisk@home - it is a CD with installation and gui on it.
but if you plan do something special - it is better to you to configure it from command promt.

All I want to do is setup a welcome greeting and some number options and hold music and call routing so I can get calls at home and my office.