W2k does not like games!

I’m sharing my home computer with my son. that is a big problem from a point of view of security. This is a reason why I resolved to install w2k and set some restriction to his user account. But… now some games are not running any more. Blood 2 isgiving me error message saying that need to be ran in a windows 32s. Duke3d is mute, I tried to configure my ess dos drivers using the autoexec.net and config.net in the same way those were in w98 but without any positive result. What I can do? I converted my both HDD in NTFS5, reason why a dual boot is not good for me.