Found them here  
Are you going to be using a CRT TV or an actual arcade monitor?
 I'm actually going to use a crt computer monitor. 
I have an abundance of them and It will be easier 
with to setup with a pc.
I'm going to use a XBOX Component  to VGA Converter.
I was originally wanting to use an arcade crt but I didn't know
how difficult it would be to switch between xbox and pc?
Hmm.. 
After looking closer at the switch boxes I don't think that's what I need
after all. It looks like that handles only video was thinking it was 
similar to a kvm switch that has video, keyboard, audio.
 I planned to buy Ultimarc X-BOX Control Adapter. Since this thing 
requires a ipac is it possible to plug the ipac into a kvm switch?
Its really hard to picture how it will all go together without 
any of these items in front of me.