If you read the first blog post about how to get your PayPal account balance through its SOAP API using the Web interface, then you will certainly understand this one very easily. We may remind you that you must have generated the package with your account if you want to do this as us.
We use the http://www.ovh.com/soapi/soapi-dlw-1.61.wsdl WSDL with the Response As A Generated Class Object operation unchecked.
First step: create a session by login
To create a session, you have to call the login operation on the OVH SOAP API. To do so, load the login operation definition by clicking on the OvhServiceLogin folder then the login operation:

Fill the following interface with your OVH personal informations:
- nic: your OVH nic handle
- password: your OVH password

Tip: did you notice that the password field is automatically detected as a password so the field is password typed?
Just click Send request to get your session identifier:

The session identifier is contained by the OvhStructLoginResponse object return property: ******-ovh-61051a273e8f7a37c7a2bbb1400a4307. Copy this string value to your notepad or anything else to use it after.
Second/last step: get your nic public info
As we did with the login operation, we are going to proceed the same way to get your nic public info using the session identifier passed to the nicPublicInfo operation. Select this operation in the tree:

Then fill the two fields:
- session: the session identifier we copied previously
- nic: the OVH nic of your account or any OVH nic handle you manage with your account

You'll then get this answers:

Conclusion
Isn't it easy? If you don't find it easy, then let us know by posting any comment you wish. If you have any question too, let us ;).