run a script for all databases

I need help what statement or function i can use to run a query in all database using one script , i want to run the below script at the same time to retrieve output in all databases

   select 
      @@SERVERNAME as ServerName,
      DB_NAME() as DatabaseName,
      Object_ID = (id), 
      OBJECT_NAME (id) as StoreProc,
      Text  
    from syscomments 
    where text like '%Janice\SQL%DTS%'.