Please Help: service tax

SIR we are furniture manufacturer and work contractor for making furniture and in following cases what is applicable (i.e. service tax VAT Excise Duty) and situations are following
1. own material and make furniture thereafter sold to customer.
2. own material and entered into a contract for making furniture (movable) on their sites.
3. own material and entered into a contract for making fixtures (immovable) on their sites.
4.Material provided by other party and labour provided by us and furniture is movable.
5. Material provided by other party and labour provided by us and fixtures is immovable.