Is it possible to load data from an excel file into a custom object within Salesforce.com?

Does anyone know how to get salesforce.com to make a some kind of notification sound when a new lead enters the system?

When you are sending a email from a lead, is there any way to validate or control who the sender email is programmatically?

When you are sending a email from a lead, is there any way to validate or control who the sender email is programmatically?

When you are sending a email from a lead, is there any way to validate or control who the sender email is programmatically?