I would also like to point out that doing so will make it difficult to play online games as you would require internet passthrough from one NIC to another enabled in Windows or Linux or whatever you're using. Though easier said than done, it's possible and I've done it. But, if you have a router, I suggest using it and blocking anything you don't want others to see via specific IP addresses. It takes the hassle out of it. The bandwidth between your PC, router and PS3 is going to be more than is required to stream, so you'll see no real benefit from directly connecting...unless you're on Gigabit internet. In that case, your internet would saturate your bandwidth and you would require some QoS settings to ensure that PMS managed to get a stream through. It's up to you if you want to try it, but you'll be required to have the PC on for internet to the PS3, and it's not of much benefit.