installer for oracle db

[prabhathgk]

I want to make an oracle db installer for my program. When it is executed it should be able to search the tnsnames.ora and list the services in combo box. Up to this it is finished(got the idea from http://www.codeproject.com/database/OSidList.asp) Now, I want to: 1. logging to the service with login id and password : 2. after successful login all the users under the service should be listed. I can either choose the existing user or create a new user with sufficient rolls. 3. after that I want to execute scripts for creating tables etc. These scripts are stored in separate folder. How will I write functions which perform the above tasks?