DCOM over internet

Hi all

I'm new to al of this and i was hoping you could help me out. just for learnng and testing purposes i've created this Chat-type program which has a server with a singleton object, and several clients may connect to the server and "chat". This works for a network, however I want it to work of the internet. Is there a simple way i can do this?

i have this line in now:
Set MsgObject = CreateObject("ChatBoxSvr.clsMsgNode", "computername")

can i just replace "computername" by an internet address such as my IP Number? or is there another way to go about doing this?

thank you for your help!