They said it will be kind of slow since she has an old Dell and doesn't want to buy a new computer.
And she said it was kind of slow while they tried to hook up her cell phone, but she told them leave the phone on Verizon and that sped things up.
I'm a bit puzzled; she's older and not highly techie so some of this could be wrong.
I'd suggest having the installers write up what they did and what to expect and leave a printout with the customer, to make it easier to understand the changeover.
EDIT: the installers did leave a package of paperwork that appears to explain everything -- at least I could follow it. One question, there's a "Sonic account" designated that seems to be a random letter and numbers. Is that an email "at sonic.net"?