Listbox "Top Row" limited to 32k

I built a primitive little scripting language in LabVIEW that makes calls into a state machine.  The listing for the langage is shown in a Listbox control.  As the execution occurs, the listing highlights the current line of execution, and keeps the listing in the window using the "Top Row" property.  All was good.
Then, a very clever user built a script generator.  Scripts can now be exceedingly long, and (despite taking an I32), the Top Row property starts erroring at a value of 32k.
Are there any purely UI workarounds to keep my listbox scrolling?  (I'd rather not have to tinker with my scripting language any more...)
Thanks,
Joe Z.

Here is an example of how to use a virtual multicolumn listbox.  The same idea can be applied to a normal listbox, but it is basically what tst suggested.  A display of data, that changes as a vertical scrollbar changes to give the appearance of one large table.
http://lavag.org/topic/15289-virtual-multicolumn-listbox/
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