[Zope] Best Zope way to split a textfield on 2000 char increments

Hi, I just realized I need to split a potentially pretty long textfield input from a web form into 2000 character chunks, for input into a database. I see a lot of string functions in DTML, but none that looks like it will do this.. I'm hoping to use this as a workaround for the seeming lack of LONG text field support in the Oracle DA. (please correct me if I'm wrong on this..but I cant seem to get it to work..) I'm using Oracle 7.3 Thanks.. Chris