Path problem

Hey!

When I try to install throw Dselect I get this errors:

dpkg: `ldconfig' not found on PATH.
dpkg: `start-stop-daemon' not found on PATH.
dpkg: `install-info' not found on PATH.
dpkg: `update-rc.d' not found on PATH.
dpkg: 4 expected program(s) not found on PATH.


What must be done??? And where??

/Jörgen