Colin, Just to add another benchmark. I'm running with Windsows XP, Intel Pentium D 2.8Ghz, Nvidia GeForce 7300LE. This is probably an inferior spec to your system. Using PTE 7.0. Video Builder compilation of 12 minute, 112MB, 130 slides takes 30 minutes. I suggest you review your Videobuilder Project Options settings, perhaps show us a screenshot. Regards, Limey