Is system.threading.thread usage suggested for a web application method with .NET framework 4.0 and WCF services ?

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.NET

WCF

Hello,

In our Web Application, We are using .Net Framework 4.0 with WCF Services.
We have a WCF Service with some DB operations after which
it generates a Report (Report Generation takes time).
Here user does not need to wait until the report gets generated and hence we have thought
of implementing Threading ( using System.Threading.Thread class and call this ReportGeneration in a new
Thread from the main thread immediately after DB operations are over).
Is it suggested to go ahead with Normal Threading or do we have a better approach ?

(Note :- We use .Net Framework 4.0 with WCF Services and WCF Service settings being set as InstanceContextMode = PerCall and ConcurrencyMode set to Single )

Please advise.

What I have tried:

Tried Implementing it using System.Threading.Thread and found it is working. But would like to know about the General Opinion on this approach.