Hi all, i am after buying a really fast desktop base unit. the ideal specs i think i want are a quad-core, 3gb ram, 400gb+ hard drive and the only games i MAY play on it are some of the old ones like escape from monkey island! im not looking to build or get one built from a local shop. an hdmi out would be an added bonus,as would wifi, although i could always put a wifi card in the usb slot. i would also like it to have a pretty fast dvd writer and some sort of burning software so i can back up any dvds/cds that i have. it would only need to have a couple of usbs as i tend to do one or two things at any one time. i know some may say i dont need a quad but i would like it fast and im open to suggestions. i would also like vista premium so that i can stream stuff to my xbox 360 . i also dont need a mouse or keyboard as i already have wireless ones. iv seen some excellent spec machines on ebay and they all have excellent feedback,(type: QUAD CORE 9.6Ghz Q6600 4GB/500GB & 8600GT 1GB HDMI +GAL), but they dont come with vista so i would need to factor in the cost of that if i was to go for the ebay ones. rep will be added for all who help or give their opinions of the ebay ones, and thanks to everyone in advance for any help, i really will appreciate it.