Once you have installed ClientExec, you'll want to configure the basic settings for your company. This can be found in the admin panel, Settings - Company. In here you will be able to edit the company URL, name and address along with a few other settings.
On the left side of this page, you will also see a Localization tab. This will allow you to change your default location, timezone, language and how to format the date, either mm/dd/yyyy or dd/mm/yyyy