Configure Network button is greyed out during install

I am installing a newly-purchased subscription of RHEL 6, using the 6.0 media kit provided by Red Hat. My symptom is identical to that described here: https://access.redhat.com/site/discussions/467643, although I have no solution.

Trying with the 6.4 media (Anaconda 13.21.195) the system hangs on 'Waiting for hardware to initialize...'. The 6.0 media (Anaconda 13.21.82) breezes past this, but does not recognize either wired or wireless network devices - symptom is greyed out 'Configure Network' button.

My concern of course is that the newly-purchased hardware I'm using isn't compatible with the rather old kernel. The system spec is here: http://www.toshiba.com/us/computers/laptops/qosmio/X70/X75-A7290. Before wiping out Windows, I confirmed that I had a wired connection, i.e. I know there's no hardware fault as such.

Some other diagnostics:

> lspci -nnk
07:00.0 Network controller [0280]: Intel Corporation Device [8086:0887] (rev c4)
    Subsystem: Intel Corporation Device [8086:4062]
0d:00.0 Ethernet controller [0200]: Atheros Communications Device [1969:1091] (rev 10)
    Subsystem: Toshiba America Info Systems Device [1179:fa77

> dmesg| grep intel
platform microcode: firmware: requesting intel-ucode/06-3c-0

Any suggestions would be most appreciated. And apologies for my ignorance.