Both CentOS and Fedora make use of GNOME for their desktop environments. To open multiple tabs you can use Ctrl+T to add additional tabs.
If you're attempting to have Nautilus open these tabs pre-populated with specific directories this, to my knowledge, is not possible. You'll have to resort to a scripted method such as this one from this AU Q&A titled: open nautilus as new tab in existing window. Specifically the answer that shows the technique using
xdotool along with
However the tabs feature was only made available in version GNOME 2.24 or higher. Looking at CentOS 5.10 it comes with Nautilus 2.16.
This article from ArsTechnica titled: GNOME file manager gets tabbed file browsing discusses the addition of this feature. So you're out of luck in using tabs with this particular version of Nautilus.
This feature will likely be ready to roll for GNOME 2.24, which is scheduled for release in September. Another long-awaited Nautilus feature that is planned for GNOME 2.24 is the compact column view. A lot of other work has been done to iron out the remaining GVFS regressions.