Did you ever resolve this problem?
Did you ever resolve the issues in your original post? They are identical to my situation.
I have a cable modem at home, and I also have a WiFi-enabled laptop.
But I also keep AOL dial-up on my laptop because I still encounter places that I have to use dial up... including discount hotels/motels and beach house rentals, etc, on vacation.
I'd love to drop my AOL, but I don't know if there is a better dial up option. Did you ever come up with an adequate solution?
I know I can probably find WiFi (somewhere) locally... but I want to retain the ability to work/surf the web from my room/home rental.