sqlprofiler on table with no indexes

Hello Forum Members,

Can you please advise me on this:

I have a table with huge data. This table doesn't have an index, so running a query on this is taking more than an hour and half and sometimes system hangs. One of the senior team member advised me on running sql profiler and I would like to know what would be use of running  sql profiler on this table which has more than 1000 million rows and no index. What would be best way to improve performance on this table other than creating an index.

Kind Regards,

sqlquery9