The Xbox is expected to sport many off-the-shelf PC components when it arrives in stores in late 2001. It will have a stripped down Windows operating system, a 700 MHz processor, 8-gig hard drive, 64 MB of memory, an Ethernet port and a DVD drive. Microsoft is banking on developers accustomed to working with personal computers to produce new games. But some are wondering if the Xbox will suffer for its PC pedigree, since many PC games are optimized for keyboard use and single players.