OT: HP-UX Certification?

[Matt Alexander]

So things are kind of slow at work right now and I thought I'd study
towards another certification to pass the time.  I've been using HP-UX
10.20 at my current job for the last several months and I've gotten pretty
comfortable with it, so I thought I'd ask around and see if there are any
people on this list that are HP-UX Certified.  If so, what topics would
you recommend that I focus on to prepare for the test?  What was your
overall impression of the test?  Any other info/advice would be greatly
appreciated.
Thanks,
~M