I am running a computer under Windows XP pro. I have been using an MSDOS program (Cadd6) for several years. It ran ok under 95 and 98 (1st Ed). It will run under XP but is unstable. I have installed a second hard drive and formatted it as a FAT 32 drive. I wish to install MSDOS version 6.22 on this second drive and re-install the CADD6 software on it. Will some :angel: please tell me how to proceed?