20 May 2011
Assessee Basis. For this you need to see taxable turnover of preceeding financial year (Total of all categories). if it crossed 10 lakh then u will be liable to service tax. and if current year turnover exceed the Rs. 9lakh then u required to tak registration number compulsory.
20 May 2011
Pragnesh is right and as such the answer to your query is "Yes".
If a service provider is rendering more than one type of taxable services, than he has to inform about additional services also. He will not get a different registration number.