How to migrate local DC'S on NWDI

Hi All

I am trying to migrate my local DC'S(WebDnpro, Java,J2ee)

onto NWDI, but I am wondering how to start, and which is the best way to do. Anyone can help me out with this issue.Please do send if there are any doccuments related to my mail id keer3rao@yahoo.com

Note: Best answers are awarded with good points

Regards

keerthi