I'ld say go to rpmfind.net (or your local mirror), but the site is closed temporarily at the moment to in protest of software patents (see
http://swpat.ffii.org/). So I checked a couple of Suse installations I have access to and see the Suse 8.2 has /usr/lib/libqt-mt.so.3 from qt3-3.1.1-62 while Suse 7.3 has /usr/lib/libqt-mt.so.2 from qt-2.3.1-42. If you have /usr/lib/libqt-mt.so.3 which I suspect you might since I believe KDE likes qt and Suse like KDE, you could try symlinking it to /usr/lib/libqt-mt.so.2. Otherwise, perhaps try to install the old version on top of the new one (perhaps in a different location and just copy the so), get the so from someone else (you don't need a PPC version do you?), or perhaps best, compile nethack for your own computer where it will use the newer qt.