Here is where I would start, I would try doing a "yum install compat-gcc-34-g77" if that fails I would look for what repository on the internet has that rpm package and install the repo in /etc/yum.repos.d, I guess to if you wanted to make sure that you are getting the x64 one, just use the add/remove software in applications and do a search for it
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Dell Inspiron 1525n F17 2.0ghz centrino
"Hi, my name is Sean Morrison and I am a recovering Windows user, I have been windows free sense Late 2005. and currently am on the Fedora 17 patch."