I think acu accepts no arguments, you have to have X and Gtk+ installed (neither KDE nor GNOME is needed). Here are all necessary libraries:
[jambor@pjambor jambor]$ ldd /usr/local/bin/acu
linux-gate.so.1 => (0xffffe000)
libgtkmm-1.2.so.0 => /usr/lib/libgtkmm-1.2.so.0 (0x42839000)
libgdkmm-1.2.so.1 => /usr/lib/libgdkmm-1.2.so.1 (0x449fd000)
libgtk-1.2.so.0 => /usr/lib/libgtk-1.2.so.0 (0x425b4000)
libgdk-1.2.so.0 => /usr/lib/libgdk-1.2.so.0 (0x4c2b6000)
libgmodule-1.2.so.0 => /usr/lib/libgmodule-1.2.so.0 (0x44a8b000)
libglib-1.2.so.0 => /usr/lib/libglib-1.2.so.0 (0x4c1b2000)
libdl.so.2 => /lib/libdl.so.2 (0x448d3000)
libXi.so.6 => /usr/X11R6/lib/libXi.so.6 (0x44ca3000)
libXext.so.6 => /usr/X11R6/lib/libXext.so.6 (0x449b6000)
libX11.so.6 => /usr/X11R6/lib/libX11.so.6 (0x448d9000)
libsigc-1.0.so.0 => /usr/lib/libsigc-1.0.so.0 (0x44a14000)
libpthread.so.0 => /lib/tls/libpthread.so.0 (0x449c6000)
libstdc++.so.5 => /usr/lib/libstdc++.so.5 (0x44b8e000)
libm.so.6 => /lib/tls/libm.so.6 (0x448ae000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0x44ae5000)
libc.so.6 => /lib/tls/libc.so.6 (0x44791000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x44778000)
