Please can anyone help me set up my osc site on the web?

I have created a site on my localhost using MAMP software. I am now ready to put the site on the web. My provider (easily) told me to go to and create a new database which I have done but now have know idea what to do next! I have tried asking easily but keep getting told someone will call back - they haven't yet and I really need to get this live.

Can anyone help?

Thank you