Depending on your requirements, you can get some nicely formatted reports without Web Dynpro...
i.e. Refer to a post that I made a while back which allowed me to produce some nice PDF's which were transferred via ABAP Proxy and Web Services into documentum via XI. Having the PDF in xstring meant I could do pretty much anything with it.
If you want to do some interactive forms; then that may be an issue without using Web Dynpro (though probably possible with some serious investigation.
see http://help.sap.com/saphelp_nw2004s/helpdata/en/2c/241a427ff6db2ce10000000a1550b0/frameset.htm for documentation about integrating interactive forms.
PS: And here's the link for Web Dynpro Java: http://help.sap.com/saphelp_nw2004s/helpdata/en/60/6fc10c6748479392101e09c9e8d33a/frameset.htm
Message was edited by: Heidi von Geisau