Libreboot screen question

Hi guys, it's been a while but I'm back on another Trisquel adventure again! This time I recently got my hands on a Thinkpad T60 (with Intel not Ati graphics) and tried installing this thing called Libreboot using this video for instruction: https://www.youtube.com/watch?v=1K5jo9gk9LQ

Well guess what-the installation seemed to be a success and when I rebooted the first time I got this great Libreboot menu screen with the gnu playing a flute along with several boot options. However since then, whenever I restart the system, it stays black for a few seconds then goes strait to the Trisquel (mini 32 bit) logon screen. I can then logon and everything seems fine after that-but I would really like to see the libreboot menu again-how do I enable that?, also how can I set things to run a dvd disk first when booting so I can reinstall Trisquel in the future when the next edition comes out? I have another thinkpad with the regular bios I could stick the harddrive in to reinstall then back to the Libreboot one-but that seems a little cumbersome!