Automate the web and database deployment

I want to do the series of tasks automatically using powershell or nanat( please advice which method or technology is good for in this case). Case- I have a public site to sign up, as soon as user sign up records get stored in the database I need scheduled service which should run periodically to check for new entry in the database, if exits then following steps should perform- 1. Create new virtual directory under IIS 2. Deploy web site to the new directory( already build and published using vs10) 3. Update config file, parse js and CSS file for certain words 4. Create new database and restore from bak file 5. Modify certain table records