The gentleman from USA Notebook that I talked to this morning said it may be that the Ethernet card needs to be replaced. Let's hope it works. *crosses fingers*
The lady at the UPS store said it should arrive on Tuesday; the web site says they try to resolve warranty stuff within 72 hours after receiving the laptop.
By my estimation, I should get it back (repaired) sometime around two weeks from Friday if all goes well.
*wishes very hard that all will go well*