There are currently no Fedora packages for x2go, but there are packages for Mandriva.

1. Start a terminal, go to a suitable folder, e g Download.
2. Download packages for Mandriva:

   wget ftp://ftp.pbone.net/mirror/ftp.mandrivauser.de/rpm/GPL/2010.1/i586/release/x2goclient-3.01-3mud2010.1.i586.rpm
   wget ftp://ftp.pbone.net/mirror/ftp.mandrivauser.de/rpm/GPL/2010.1/x86_64/release/x2goclient-cli-3.0.1-3mud2010.1.noarch.rpm
   wget ftp://ftp.pbone.net/mirror/carroll.cac.psu.edu/pub/linux/distributions/mandrakelinux/devel/cooker/i586/media/contrib/release/nxproxy-3.3.0-3mdv2010.1.i586.rpm
   wget ftp://ftp.pbone.net/mirror/carroll.cac.psu.edu/pub/linux/distributions/mandrakelinux/devel/cooker/i586/media/contrib/release/libxcomp3-3.3.0-3mdv2010.1.i586.rpm
   wget ftp://ftp.pbone.net/mirror/carroll.cac.psu.edu/pub/linux/distributions/mandrakelinux/devel/cooker/i586/media/main/release/libjpeg8-1.1.1-1-mdv2011.0.i586.rpm

3. Install most of the packages with yum (automatically solves dependencies):

   sudo yum install perl nxproxy-3.3.0-3mdv2010.1.i586.rpm libxcomp3-3.3.0-3mdv2010.1.i586.rpm libjpeg8-1.1.1-1-mdv2011.0.i586.rpm perl-Proc-Simple perl-Term-ReadPassword qt qt-x11

4. Install packages with unmet dependecies (“perl-base” in Mandrake, Fedora calls it “perl”):

   sudo rpm -ivh --nodeps x2goclient-3.01-3mud2010.1.i586.rpm x2goclient-cli-3.0.1-3mud2010.1.noarch.rpm

That's it. Start x2goclient or x2goclient-cli.