My wife has just bought me an Xbox 360 and I've just subscribed to Xbox live. I read somewhere, and implemented it, that the only way to enable the XBox to connect through Zone Alarm Free using Internet Connection Sharing is to set the Internet Security to Medium.
I gather that this poses a security risk as my PC is no longer in stealth mode.
1) Can someone clarrify how much of a security risk this really is?2) Whether upgrading to Zone Alarm Pro will enable me to use internet Connection sharing without compromising the security of my PC as I currently have to do?

Operating System:Windows XP Pro
Software Version:
Product Name:ZoneAlarm (Free)