Software Routers vs. Hardware Routers?

Daniel Garcia asks: "I recently got put on a task at work to find out if using Win2k as a router is a good idea or not. So far, the only information I've found lies here. Only problem is that the article doesn't have any benchmarks or real data to back up some of their claims. I just wanted to ask the /. community if anyone has used any version of NT as a software router and how it compares to using a hardware router. Personally, I'd rather use a hardware router than a Microsoft product but I don't have any data to back up those claims."