Create PMD (Clinical Document) Document from Webdynpro ABAP

Greetings everyone,

       I have developed two PMD document category(Tcode :N2T6 ) for Clinical documents in SAP R/3 and somehow with the limitation of R/3 in terms of developing user friendly screens like Auto fill and image processing etc...,Users do not satisfy with it.So we are planning to develop in Webdynpro ABAP.But i am not sure how do we integrate the webdynpro development with IS-H PMD (clinical documents) documents ,also I am looking for BAPI's to create our customized parameterized documents.Any help will be really appreciated.

Thanks,

Vignesh