Guesso will be installed in /usr/local , if you want to change it open guesso.pro and change the first line "install.path" to the new path.
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First you need to compile guesso ,you must have qt3-devel 3.3 or later in order to compile it, open the console and type the following command:
qmake			//to generate the Makefile
make			//to compile guesso

to install run ,as root,:
make install

to uninstall run ,as root,:
make uninstall