Tables & Borders

Is it possible to have the default borders on some tables and have them removed on others? I use tables in a few places to align pictures and text quickly. These I don't always want borders (http://www.ipcrew.com/SHSTest/admissions/whyshs/). There are other places where I'd like the borders on the tables (http://www.ipcrew.com/SHSTest/admissions/tuitionfees/). Thank you.