Oggin Aviator,
You cannot use High Speed and Dialup in the same sentence no matter what the marketing people tell you.
The only way you have High Speed is with Cable, DSL, T1, T3, etc. but not with dialup.
With the standard Earthlink service you will be very happy. (Most hotels do not have very good phone lines to begin with, so you will not get very good connections anyway.)
Take Care,
Richard