hi,
1) you should set your locale to your encoding - i don't know what encoding hebrew uses, but i suggest utf-8
in /etc/profile.d/lang.sh there should be a line like this
Code:
export LANG=en_US.UTF-8
in slackware utf8 isn't default, so you will have to change it
2) in konqueror options (or the file manager you use) you may have to change encoding settings too
3) if that doesn't help, try mounting your slackware partitions with iocharset=utf8
4) make sure you have unicode fonts installed
hope that helps