When new user is created in FIM, an approval mail should be sent to his manager

Hi,

We have a requirement that when a new user is created in FIM, an approval mail should be sent to his manager for creation in external source i.e. AD. If the manager rejects the request, the workflow ends and user should not get created in AD.If the manager approves the user creation request then an another request mail should be sent to the user's manager's manager for 2nd level of approval.If the user's manager's manager approves the request then user should get created in AD.

Regards

Anil Kumar