Righto.
I reinstalled 3dsMax9 a couple of days ago, and my problem lies with the display mode.
While in d3d, the viewports disappear completely(i.e. no grid/model. It turns grey)
Switching to Software/OpenGL works, but it runs so slow that it's impossible to do anything with it, especially when it comes to texturing in it.
I blame it on my Radeon 9600 Pro(128Mb/PS. 2.0), but I don't see the actual reason for it, as it previously ran flawlessly on the same desktop.
Halp.