I don't think the question has been answered, and I'm wondering what the answer is.
I don't see a way to have Konqueror load a page on start.
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Well, it's really simple (if you know the way).
Start konqueror, go to Settings -> Configure profiles and there mark both boxes "URL" and "Size" for the item webbrowsing.
Then enter the desired webpage f.i. (
www.xyz.net) in the location-bar, press Enter and when you're connected go again to Settings -> Save view profile "webbrowsing" and you're done.