Hi,
The Linkedin API uses REST protocol for all data communication so its not a problem to fetch particular profile fields given the profile id. I am assuming you would want to fetch data of multiple profiles which are separate from the profile of the current logged in user.
The only thing I was not clear about is about the user being logged into IE , since the Linkedin API will anyway require valid user credentials to authenticate before it allows the use of the API.
Looking forward to your feedback.
Amit