Hey man, WinRAR is a very useful program; but I am a freeware person so I recommend trying IzArc
http://www.tucows.com/preview/335168
It can handle his archive utility suports many archive formats like: 7-ZIP, A, ACE, ARC, ARJ, B64, BH, BZ2, BZA, CAB, CPIO, DEB, ENC, GCA, GZ, GZA, HA, JAR, LHA, LIB, LZH, MBF, MIM, PAK, PK3, RAR, RPM, TAR, TAZ, TBZ, TGZ, TZ, UUE, WAR, XXE, YZ1, Z, ZIP, ZOO.
Let me know if you don't like it... i'd be surprised.