So first i hit up /etc/modprobe.conf and verifed that the correct driver module was being aliased for the interface.
alias eth4 e1000
Ok check. Modprobe.conf looks good.
Now re-initialize driver
Then onto check lspci to make sure that the driver initialized all the interfaces. Note that there are two different versions of the 82546EB driver, which tells me that the driver was only initialized for two of the interfaces initially.
Turned my attention back to the ifconfig-eth4 and the fact that there was not a MAC address defined in the config file. Grabbed the mac address out of /etc/sysconfig/hwconf and added it to the ifconfig-eth4 config file