Chaoslauncher is a program which serves as a GUI for a number of Starcraft plugins. It supports plugins using the BWL4 format which fully integrate with the launcher, and DLLs which are directly injected into Starcraft.
To add the AdvLoader plugins simply install AdvLoader and they will show up in Chaoslauncher. Don't copy contents of "plugins" folder into Chaoslauncher's! You need Chaoslauncher 0.5.3 or above.
Some plugins need administrator privileges in order to work, most should work without though.