You use certain little tips and tricks with the SQL Server tools which are not documented anywhere. This is one of them. I needed to find out the version of a SQL Server instance from which the Profiler Trace was captured. I opened the Profiler trace using SQL Profiler 2008. I clicked on the Trace properties and lo behold I had the SQL Server instance name and version.

I got the SQL Server release, version and the instance name (Trace provider name).