You can type "which kppp" in the terminal to have it display the location of the executable in any distribution.

I am a slackware user running slackware-13.0, slackware64-13.0, slackware-current and slackware64-current and a slackbuild maintainer. The which command tells you where the executable is on any linux based system. In all recent versions of slackware kpp is located in /usr/bin/kppp.

You can verify it by checking the packages directory.

cd /var/log/packages

grep kppp *|grep "bin/"

by using the slocate database

locate kppp|grep "bin/"

or by using the which command that I tested on slackware64-13.0 prior to the first response.

Have you confirmed that the modem is properly detected and the correct driver module is loaded for your modem? As for the modification of the rights on kppp, I would recommend setting up the rights for only the necessary users in the sudoers file to launch it with root permissions rather than playing with the permissions. It you like you can also modify the executable path for the kppp desktop file for the effected user to launch it with kdesu, but that will still require the root password.

I recently got a Q61 (Compaq) laptop that has a audio chip that is supported, but not completed, I does not detect the headphones and automute the speakers. the reason is because the specific snd-hda_intel module that is used to make the audio work has not yet gotten that function working in a stable manner. The issue with your sound may be similar in which the chipset may be so new that the drivers and codecs have not been pushed in the kernel and also versions you are using. But alternately you can run alsoconfig or alsconf (I can't remember which) to see what cards are detected and tell alsa to use them.

THe OOo item seems new to me, where are you getting the OOo package or build from?