Controlling Windows startup apps

Windows has various ways to launch programs on startup.  You can put shortcuts in the Start Menu.  You can put commands in your netlogon.bat file.  You can modify the Windows Registry.  There are programs out there that allow you too see most of the startup programs and enable/disable then.  The problem I have is I do not have admin access to my work computer.  I started a program at work one day, and it decided to modify the Windows Registry so that it starts up every day when I logon.  It is a Java process, though, so it takes up a lot of memory that I don't have available (I'm on 32bit Windows). When I log into my computer, a few things start up so it takes forever.  I don't have admin access, so I don't know how to prevent the program from starting up.