Audrey & adding new drivers

Many apologies if this isn’t the right forum.

I have an Audrey arriving soon from a seller on eBay, and already I’m looking into modifying it. In particular, I’d like to make it work with more Ethernet adapters than
the couple of 3Com adapters whose drivers are already installed on the appliance. So here’s my 100,000-foot view of how I’d do this:

  1. Download flash ROM image from Audrey.
  2. Find QNX driver for an Ethernet adapter, or write one.
  3. Drop the driver into the file system on the ROM image.
  4. Do whatever sort of configuration is necessary to let the OS see the driver.
  5. Upload the image back into flash on the Audrey.

I’m making a lot of assumptions here (in particular that QNX isn’t like Linux in the sense that device drivers aren’t compiled into the kernel), and before I get started on
the project I’d like to know whether I’m insane.

Am I living in a dream world? Can this be done?