Thank you for the comment but it didn't seem to work. Let me be more specific. From Konqueror (ver 3.1-15 (using KDE 3.1-13 Red Hat)), under the Settings --> Configure Konqueror menu, there are multiple icons on the left side.
The first one is Behavior (with a folders icon). In it, I have "open directories in seperate windows" unchecked.
The fifth icon is Behavior (with a web icon). In it, I have "open links in new tab..." checked.
Despite this, it still launches multiple Konquerors & not multiple Tabs. Could it be anything in the Profiles settings?