Compaq F750US AMD64 Debian4.0 - Fails at Ethernet "8139too"

[APBulletins]

I am trying to install Debian 4.0 from the CD image(s) I've downloaded.
When it gets to trying to find my Ethernet device - to which I have an
active plug connected - I get "No Ethernet card was detected."
 
When I scroll the list and choose "8139too: RealTek RTL-8139 Fast Ethernet",
the screen just keeps refreshing to the list of Ethernet cards.
 
Should I be putting DVD#2 in the drive?
Is there something awry with DVD#1?