Pineapple Kid:
If you have the Verizon Office kit and the correct cable to connect your cell phone to the laptop, you should have all you "need" to make a dial-up connection that would use your normal cell phone plan minutes. If you dial up after 9 PM and weekends, it is free. Your connect speeds will not be blinding, i.e. 44kbs to perhaps 54 kbs. But to check webmail on a server somewhere and download normal messages with modest attachments here and there, it is not a terribly painful task. You DON'T need any other "plans" provided your ISP has a dial-up phone number you can use.
Most folks at any Verizon store truly do not have a grasp of the "solution" from one end to the other. The software in their "office" kit is the same as I recommended in the original thread of this topic. I still use it today and have only had to change my cable when I changed my phone. I did not purchase anything extra on my Verizon cell phone plan.
Hope this helps. Happy New Year!