Julie the answer is yes, but depends.

Yes, I have a treo, and I access my email/browse the internet and pay for
minutes of use.  It is actually called minutes of use (Feature MOU) as I
recall.  I've had it for years.  BUT: They try and put me on data plans, and
each time I explain that I want to keep my "existing" feature, do NOT want a
data plan, and they have always let me keep it.  Although occassionally an
automated "audit" will change it; a phone call to wireless data with an
explanation gets it back.

Works this way now:  When you sign up for a new smartphone, the ordering
system "requires" that a data plan (heard it was unlimited) be put into the
"plan."  But it will not take effect until you activate the new phone.
(Automated process).  My suggestion is this:  make sure that you have the
MOU feature now, and have it noted in the account "before" you order your
smart phone.  Do the automated process, and then call in and have the
correct codes put back onto your phone.  Works for me every time.  If you
have MOU, you seem to be able to keep it.  Be firm.

Caveat: If you've never had a smartphone, and want to order a smartphone and
get the MOU?  I am not aware of anyone that has done that successfully.
Since it is not a current offering, it is hard to convince someone that your
"entitled" to it.  One possibility: State that you want the phone as a
phone.  And expect to use the PDA portion in lieu of a 2nd device.  You do
"not" intend to use it for data, but as a PDA  (Good so far).  But you do
want Get-It-Now functionality to work.  That should get you data with MOU.
However:  if you want to be "fair", and want to use the data features, then
perhaps you should have to pay for a data plan.  I am not encouraging a
workaround, just bringing it up as a thought.  We ask VZW to be fair (and
their contracts and business ethics are plenty short), so to set an example,
we should try and be fair even if they aren't.  Especially since depending
on the phone, you can use data AND voice at the same time, so you are
getting more, should perhaps pay more. IMHO.  dr