We do not have an Helix Servers, however we are not opposed to having them either. If you'd like one we can have it installed or install it for you on one of the dedicated servers.

According to their site they suggest at lease a P4 or equivalent processor and at least 512 megs of ram so all of our servers exceed those requirements.

See managed dedicated servers

And yes, you can stream. It is your server so you can do anything you like with it.