I had the same problem- mistake made initially when I thought "what use would i have for programming"- Now I know why
I've been on linux for 2 days (first time ever, and oh yes, I pledge my allegiance) and am able to get by uptill now. I followed the instructions to add applications but i got the following error message.
http://xs18.xs.to/pics/05093/packagesnotfound.png
I figured out the problem could be solved by upgrading the installation- so i rebooted with the FEdora Core 3 CD1 and went through the installation, unfortunately it didnt specifically prompt for the "add/remove" apps dialogue box. The only option i selected was upgrading and NOT a fresh install (since I had used both YUM and up2date, i felt a fresh installation is a waste of time)- if there's anyway, i can get around this without a fresh installation, please let me know.
In the mean time, let me re-run the installation to see if i can get the options right again