>The thing is that if she keeps complaining I can't think of anything other than win2000. Any comments? Is it worth taking this leap so soon after its release? Should I wait until at least they come out with 1 service pack?

Win2000 is the successor to NT. As with NT make sure all of the hardware and software is certified for Win2000. You might want to wait for Windows Millenium which is the upgrade path for Win98.