Here are a couple of similar posts on the subject of using WinZip, or as Lokero suggests mabye doing it with CAB files.

http://www.kixtart.org/ubbthreads/showflat.php?Cat=&Board=UBB1&Number=117197
 
http://www.kixtart.org/ubbthreads/showflat.php?Cat=&Number=75192