How do you slipstream drivers that come on CD-rom, for example with the motherboard into nlite? Do I need to somehow extract them or can I just attach the installer?
I've always selected the integrate drivers option at the beginning of the nlite setup, and then when adding a device I navigate to the driver folder and select the appropriate inf file. That's it. the drivers are then integrated into your nlite iso. On my epiaM I'm able to delete most all of the windows drivers and install the latest versions posted on the manufacturer's web site.

On a business trip right now otherwise i'd post screenshots.

good luck.