I own an eMac (2nd generation, I think) and a 12 inch iBook G3 700
mhz. The eMac is connected to DSL and the iBook has an Airport card
receiving a signal from a wireless router. I am so fed up with my DSL
service provider, that I am investigating WiFi Broadband service from
my cell phone provider (Verizon).

I am having some trouble getting all the details to make a decision as
to whether this is even feasible. Verizon says they have 2
cards/software that are Mac compatible.

From what I understand, PC cards will not fit in the slot in my iBook.
I am not sure about the eMac.

So I have determined that I could use a USB adapter for the card. But
I have gathered that this is only worth doing if you have USB 2.

So my question is can I use a USB adapter for the card? In which
computer? Can I share the connection without buying more than one
card? And lastly, is there a speed issue caused by all of this?...My
location (SC) does not have Verizon's fast Broadband WiFi yet, but
will within a year.