Could not find the Server Agent in SSMS

If you are not granted the needed permissions, you will not be able to see the Agent, no matter whether you run Enterprise/Standard/Datacenter, etc...

The roles needed are sysadmin, or the individual roles here - http://msdn.microsoft.com/en-us/library/ms188283.aspx

SQL Server Agent is only available with certain versions of SQL Server. For instance, it is not available at all with SQL Server Express.

If you have SQL Server Standard or Enterprise it will be available in SQL Server Management Studio (SSMS) at the bottom of the listing of server items.

You don't need SQL Server agent to start a server side trace. That is just to schedule it.

You can issue the commands directly in a management studio / query analyzer window.

Here is how:

Open SQL Server Profiler and setup the trace that you are interested in. Run the trace, then stop it. Go to File-->Export-->Trace Definition and select the target you are interested in.

This will save the SQL commands needed to start the trace in SQL Management Studio.

I use this technique all the time.