Firstly, sorry if I come across as silly for asking the questions that I am about to ask - but I'm not that clever with networking. :tongue: Basically I read enabling QoS uses some of your upload bandwidth. I don't mind doing this on my internal LAN, but I would prefer not to have QoS data broadcast out to the internet. From what I can gather, QoS transmits what applications are using my bandwidth, and I can tell my router to use that data to throttle data from a certain program. So I don't my router using this data, to throttle outgoing data to my cable modem - but I prefer not to 'leak' information, where possible. So what advantages would I get from re-installing the QoS protocol in Windows XP Pro? As a rule, I always remove it from networking when installing XP. Really, my ultimate goal is to limit upload traffic from a computer. So when I'm playing Unreal Tournament (not 2003/2004), I'm not lagged suddenly by that user uploading files on MSN, Internet Explorer, etc. Is the above possible without the use of QoS? Thanks - mostly for being patent :tongue:, but also for any future responses!