"I am wondering how to create a layout where one tab is next to the other, and so on, and so on."
I'm afraid that you lost me there. As you add tabs to a tab control, each tab is next to the other. Do you want all the tabs to fill out across the control? A "full" justification would be nice.
In addition to the justification options, you can also control the width of the tabs. You could for example, specify a fixed width for each tab so that they fill evenly across the top of the tab control.
Is that what you had in mind?