[AccessD] BIG textbox problem

That's a problemm with a BIG textbox actually.

Some of the rows have memo fields with > 32K characters in them.  They
display OK and can be navigated with the keyboard and scrollbars OK. Now
the yewsers want to use the mouse wheel to scroll through the textbox on
one form.

This function would not suffer from the usual mousewheel problems as the
textbox is on a modal popup form that is filtered to only ever, ever
show one record.  

So I have prototyped the solution using a really rough method of using
the mousewheel event Count parameter and the textbox.selstart property.
Having started to review this prototype it works (sort of) OK until we
get these records with superbig contents. As soon as the selstart gets
to 32thousandwhatever further wheeling throws an overflow error ( as
selstart is an Integer!)

So I am asking whether there is any other ways to implement what they
want?  I have given the requester enough (free) support time on this as
it is so I am looking for any quick and easy solution ideas to sell them
on the final solution.

Any ideas?

Tia
Bruce