Well, the biggest clue is in the error. You have to add the package internettools to your project.
Lazarus - Project - Project Inspector - second add button (Add other) - Second Tab Sheet (Add new requirement), from the dropdown list, choose InternetTools.
UPDATE: Might be worth reading through the following so you've got an idea of what's happening
http://wiki.freepascal.org/Lazarus_Packages
Lazarus - Project - Project Inspector - second add button (Add other) - Second Tab Sheet (Add new requirement), from the dropdown list, choose InternetTools.
UPDATE: Might be worth reading through the following so you've got an idea of what's happening
http://wiki.freepascal.org/Lazarus_Packages
