Help with regression

#1
I've designed and run this experiment with 12 levels

fators are as follows:
source (2 levels)
explanation (2 levels)
tone (3 levels)

each participant is expose to only one level of source, explanation but 2 different levels of tone

I am drawing a complete blank as to how to analysis this using spss
Advisor prefers regression but I think some sort of NOVA or Manova would be better suited

Any ideas or suggestions would be greatly appreciated
Thanks