1) Download the Sametime Connect 9.0 rpm and open a terminal window and navigate to the folder containing the rpm (usually sametimeclient.standalone/Linux )
2) Use the following command to extract the rpm (**The XXXXX will vary depending on the exact package name**):

rpm2cio sametime-connect-9.XXXXXXX.i586 | cpio -idmv

3) Now copy the extracted files over to the proper directory:

sudo cp -pr opt/* /opt
sudo cp -pr usr/* /usr
 

4) Now install the correct dependencies with the following commands:

sudo yum install libX11.686 libXt.i686 libXext.i686 libXrender.i686 libXinerama.i686 libXi.i686 libXrandr.i686 libXcursor.i686 libXdmcp.i686

sudo yum install freetype.i686 zlib.i686 libpng12.i686 glibc.i686 libgcc.i686 libgnomecanvas.i686 gtk2.i686 atk.i686 gdk-pixbuf2.i686

sudo yum install libart_lgpl.i686 pango.i686 glib2.i686 libxkbfile.i686 fontconfig.i686 libstdc++.i686 PackageKit-gtk3-module.i686
 

5) At this point you should be able to launch Sametime Connect with the command: sametime-connect
6) You may need to accept the license and rerun the program with that same command