Take your PowerBook and Tiger Install DVD to someone / somewhere that has a Mac, with a DVD ROM drive or Burner.
01. Connect your PowerBook to the 'other' Mac via a FireWire cable.
02. Boot your PowerBook with the 'T' key pressed.
03. Once your PowerBook appears as an icon on the 'other' Mac, insert the DVD into the 'other' Mac, and double click on the DVD's 'Install Mac OS X' application.
04. Proceed with the installation process, making sure you selected the PowerBook as the destination, navigate until a panel displays the 'Customize...' button. Click on the 'Customize...' button.
05. Click on the 'X11' check box to add a check mark. All other check boxes should be not checked. If any are click on the check box(es) to remove the check mark(s).
06. Continue the installation process.
07. Once the installation process is completed reboot both Macs. As the two Macs are rebooting, remove the FireWire cable.