KDE RPM installation problem

[Dumping Ground]

Hi, 
I am facing a problem while installing any RPM application. Just to tell you I am using Fedora Core 3 on KDE 3.3 environment. Whenever I double click on any RPM it opens up the archieve manager instead of installation manager... but if I double click on the same RPM from GNOME it gets installed, i tried to google this problem but have not got any answer as of now.... Now whenever I have to install any application I have to do it from Command Line.  Also to tell u the same thing works from GNOME but not from KDE.I am sure that there must be some setting to make this work on GUI.

Earlier when I was using Redhat 9.2 I was able to install the packages from KDE. 

Is there any particular setting to enable this feature. 

Thanks & Regards, 
Prabodh
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