There is no default one in windows, addons (see above) can be put on though. To remove or add programs, do the following.
1) check the registry (regedit)
--> HKLM -->Software-->microsoft-->windows(not winnt)-->current version--> run
in there, delete the keys you don't want to run at start-up. also check run once, run services, and anything that says run.
2) check the start menu startup folder
c:\documents and settings\ ____(user)_____\start menu\programs\start-up
also check the all users, and default user folder.
Getting rid of those is the same as doing the startup in msconfig.