I would recommend SPLTOOL and MAILTOOL from http://www.bvstools.com/
These are a very cost effective way of turning AS400 spoolted output
into TXT, DOC or PDF and come complete with fully functional commands
for either manually converting a spool file or for doing this
automatically. Using both tools at my last job I wrote a DreamWriter
front end which enabled pretty much any JDE report to be converted to
PDF and emailed out.
The software is sweet and very affordable, plus Bradley Stone, the
author is very helpful should you run into problems.
No I don't have any affiliation with them - just passing on a helpful
solution for what you need.