Simple? situation: One PC, two HDD, WinNT Installed; Now I want to install Win2000 to this PC (exactly to add Win2000), so the WinNT will be working as they do now. I've installed Win2000 once to a PC with WinNT installed and the installation of Win2000 killed the NT. Now I need to have both (the old NT and the new 2000) on the same machine working (with the option of switching between them). Uff, I'm curious if it's clear.