IZArc forever. If you are still using WinRAR or any other commercial zipper you should check out this little marvel.
7ZIP, ACE, AR, ARC, ARJ, BGA (GZA), BH, CAB, CPIO, Debian, ENC, GCA, GZ, HA, JAR, LHA, LHZ, MBF, MIM, PAK, PK3, RAR, RPM, TAR, TAZ, TBZ, TGZ, UUE, XXE, YZ1, Z, ZIP and ZOO files support, skins, multilanguage, integrated CD and DVD image conversion (ISO, BIN, MDF, NRG, IMG, C2D, PDI, CDI), uncompression of self-extracting packages and pretty much whatever you want
FOR FREE.
http://www.izarc.org