Greetings, I just bought a Sony VGP- XL1B on e-bay. I have a computer running Windows Vista Ultimate (32bit). I downloaded the software from Sony's website for Vista Home premium and tried to install it. The first time I installed it came up with a px error. I tried to install the software that came with the unit and it installs fine but their is no "Maintain Discs" in the media center start menu. I tried to search the forum for something similar but could not find anything. I have it working with my laptop which has MCE 2005 but would rather use it with my HTPC running Vista Ultimate. Thank you in advance for your help!