SharePoint Workflow...

Hi,

I have a question. Is it possible and how I can accomplish such workflow on SharePoint?

1. A new document is created in a library. It triggers the " document acceptation" workflow for User X
   1. User X is sent notification by email
   2. Task1 is created and User X accepts the document
2. Completing Task1 by User X leads to
   1. Sending an email to User Y with notification, that Task 1 has been completed
   2. Task2 is created for User Y
3. Completing Task2 by User Y leads to
   1. Sending an email to User Z
   2. Creating Task3 for User Z with the request to do Task3

I hope, that I have explained more or less clearly what I would like to achieve :)

Thanks a lot for answers.

Fabis