Yup, the best breakdown on HP revenues I could find is 2002 #`s. Not sure if they are still relevant, but here they are:
17% of revenues were from services group.
28% of revenues were from imaging and printing group.
31% of revenues were from personal computing group.
24% of revenues were from enterprise systems group.
We know the first one does not count, but the remaining three do. That leaves max 83% of their revenues from infringing technologies, but like you said, they sell accessories and supplies, as well as some software in the enterprise systems group I am sure. So, my guess would be in the 60% to 70% range or 53 billion - 62 billion. Just a guess! GLTA