System Requirement ( minimum ) 800 Mhz Processor, 256 MB RAM ( 512 Recommended Though, will run nice on 512 MB ,better than full Vista ) 4 GB free HDD space ( for vista installation only ) | Windows Vista UA Lite-Ram256 Windows Vista UA Lite-Ram256 System Requirement minimum 800 Mhz Processor 256 MB RAM 512 Recommended Though will run nice on 512 MB better than full Vista 4 GB free HDD space for vista installation only compatible graphics card if u want AERO theme working how ever a patch is appied to force AERO to run on unsupported Graphics Card havent tested it though. Installation Installation is Fully Automated. Only one thing you will have to select is your Partition rather than wont need to select product key language or any other selection. just set back and wait till 15 mins. you will see desktop within few mins. you have to make new installation. upgrade option is not available. Genuine validation You Wont need to find to activate and validate your copy. caz it will be already validated when you see your desktop. setup will it automatically during setup. you wont need to .