Last year I bought an HP PC with Media Center 2004 installed. I've since sent for and recieved the 2005 upgrade, but I'm hesitant to install. The 2004 works great, but microsoft says in order to use an extender, I must have 2005. Has anyone been through this? Also, I'm curious if anyone has used the xbox as an extender. I already own one and if it does the job as well as other boxes, I'd like to use it. I'm quite new at this stuff so all opinions and details are appreciated. Thanks .