WinRAR is an archiving utility that completely supports RAR and ZIP archives and is able to unpack CAB, ARJ, LZH, TAR, GZ, ACE, UUE, BZ2, JAR, ISO, 7Z, Z archives. It consistently makes smaller archives than the competition, saving disk space and transmission costs.
WinRAR offers a graphic interactive interface utilizing mouse and menus as well as the command line interface. WinRAR is easier to use than many other archivers with the inclusion of a special "Wizard" mode which allows instant access to the basic archiving functions through a simple question and answer procedure.
Just extract onto USB and run.
Tested and work on Windows XP SP3 and Windows Vista.

Homepage