在我的网络上托管公共网站的风险？

I want to set up IIS on an old XP box that I have on our our LAN at work so that I can host some Silverlight stuff on it that I am plying with so I show it to others on the internet. I have a public IP set up already that shoots straight through my firewall and straight to that machine, and I sometimes use Remote Desktop to log into that machine and do some misc work when I am at home. It has drive letters mapped to data folders on the server, but no data is directly on that machine. I do not want to expose my entire network to risks that I do not understand. So, will it be safe if I let people surf to the public IP address to hit that machine with their web browser?I want to set up IIS on an old XP box that I ha