Consider installing a second drive. Otherwise you will have to use \nthird-party software to partition the disk without losing the system on C:. \nThe Disk Manager in XP x64 will not allow you to divide up C:. Commercial \ndisk management software costs about the same as another hard disk anyway, \ndepending on its capacity. After you decide what you want to do, folks in \nthis ng can guide you to installing x86 on your system. As a rule you would \nneed to install the x86 edition first and then x64 (older OS's should be \ninstalled before newer), but there are procedures for use if you have \nalready installed the newer OS first. First decide what you want to do.