Please edit your link to http://kvpm.sourceforge.net/
"KDE Volume and Partition Manager" is not a program
by itself, is a front end to 1) parted 2) Linux lvm.
Parted is not very usable internally ...
Suggest : A live Linux cd with Gparted.
Linux lvm : You already have the GUI tool
If not ... then # yum install system-config-lvm