Hi! After unpacking "ns-allinone-2_1b6a_tar.tar" I tried "./install" to install the whole package but I always get the same Error: In file Included from ./tkAppInit.c:16: ../generic/tk.h:77: X11/Xlib.h: File or directory not found make: *** [tkAppInit.o] Error 1 Does anybody know what I can do in this case??? Thanks Siegi