I can't believe I am suggesting this... please don't send any flaming
arrows my way.

Banner (click through) ads for the HP e3000.  Context specific (like on
AltaVista) might be interesting.  Wonder how cheap they are?

Click through to a site which has plenty of e3000 info (maybe 3kworld?)
and especially an easy way to make contact with an e3000 evangelist... NOT
the usual HP corporate marketing types who would try to steer them to the
9000...

There's still the issue of WHAT to advertise... and how to determine the
keywords which would trigger the ads.  Perhaps searching for "AS/400"...

My target is people who have never heard of the e3000.

Perhaps this is something the e3000 user community could fund.

Rick