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No door at this house? …
I can’t encounter KPPP or something similar in KDE4 milestone 7.
Maybe on Suse “dialuped internet” is something from the ancient ages? Well, then…: buga uga buga! 
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Have you tried searching for kppp or kinternet via yast software manager?
Please make sure kppp package have been installed in your system. If you can’t search it, please download and intsll it from the below:
RPM Search kde4-kppp-4.0.4-20.1.i586.rpm
After installation, refer to below tutorial to configure connection:
BSD/Linux Tutorial Zone: Configure a internet connection through kppp for dial-up modem