Problems with dpkg


I’d like to install an .deb-Pakage on my openSuse 11.0 Gnome System. But dpkg doesn’t work any more.

First dpkg couldn’t find the file »/var/lib/dpkg/available«. Therefore I created an empty file.

But now this error appears

dpkg: »update-rc.d« not found on PATH.
dpkg: 1 expected program(s) not found on PATH.
NB: root's PATH should usually contain /usr/local/sbin, /usr/sbin and /sbin.

Any clue how to fix that problem?