Please Help: Service Tax Registration - Amendment for Addition of new Taxable Service

Dear Friends / Experts,

Please guide me on the following, IF POSSIBLE:

An Individual Service Tax Assessee proposes to add new Taxable Service with the existing one.

Query

What is the procedure for Amendment in Service Tax Registration for inclusion of new Taxable Service and documents to be submitted to the Authorities?

Your reply, please..............

Thanks in advance for possible replies from all concerned.