XP or 2k > 98. 98 is a 9x where 2k&XP are nt4 derivatives (XP less so). nt4 uses NTFS which owns FAT32. Plus, 98 has no security. Having a corrupt 1gb file on 98 would be common, on 2k/XP, it would be rare (I've had 6gb files, and nothing happens to them. NTFS handles volume better than FAT32, since FAT32 was built when the max size for a system was 10gb using about 4 drives). Emmulator overhead has to do with how much raw clock/memory time the emmulator itself uses (which then makes that clock not availible to the program it's running). I actually don't know anything about linux, though I did know there were zillions of versions, and that redhat was once really common, and that tarballs suck (at least they do on windows).