Pulgrey,
In the default UI only hot bar 1 is enabled, in order to enable all you need to do the following:
-in your Everquest directory under uifiles make a copy of the default folder and rename it something without spaces like custom1
-go
here and download the full ui @ 1. Default - Download the FULL UI >>>here<<< (click the link in the original forum page so you know it is legit)
-extract the archive or open it whatever your typically do copy the file EQUI_HotButtonWnd.xml to the new folder you created.
-once back in game type /loadskin and hit enter. Select your folder and ensure the option to keep your current layout is selected.
-you may need to enable the hotbars individually, the hotkeys for doing this can be seen or set in options. I think you can also enable them under the EQ button.
Hope this helps.