We have a mixture of rented and co-located servers currently. Whatever was the best performance option we could afford at the time is what we went with. In France, the servers only have one IP so we rely on different ports. Games that don't allow changing of ports, we just buy a new box

All of our US servers provide a unique IP address for the game, so it's on the default port.
Currently Warband doesn't have a way of setting the IP to use, so it's on a sequential port numbering system.
Uploading .exe files is not allowed, and running a 2nd .exe would not be possible without setting up a special service for it. We've made a few exceptions to this in the past as long as we have the source code, it passes a virus scan, and it won't disrupt other services.
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