"[root@dhcppc2 apt]# rpm -Uvh apt-0.5.15cnc6-0.1.fc1.fr.src.rpm"
All programs come as both source packages and binary packages. In this case I think that you want to install the binary package but you are installing the source package (src.rpm). I suggest that you install the apt binary rpm. The binary rpm has a similar name to the source rpm except that the binary package name will end in i586.rpm or something similar.
Be prepared. Create a LifeBoat CD.