My dorm allows me to register two MAC addresses because they say they're running out of IP addresses. Let's just not ask why they didn't switch to IPv6 and go on. I have a Playstation 3 running Linux, a Windows 7 laptop, and I don't see any option for Internet Connection Sharing on my Windows laptop. Even if I did, I only have one ethernet port on that laptop, and I don't know if adding virtual ethernet adapters would let the ICS option pop up. How do you even add virtual ethernet adapters for Windows outside VMWare anyway?
Or I could use PS3 Linux... I haven't found much resources on virtual ethernet adapters for Linux, only stuff about how it works in the kernel. The third computer which I'm trying to connect to the internet will have only a 100Mb Ethernet connection. I have a WRT54GL on the way, it's just that I don't know how long it'll take so I'd like a stopgap solution. Any ideas?