Hi,
My language is Farsi and it is right to left ,so every thing should be mirror of left to write.I changed 2 files.
/opt/zimbra/jetty/webapps/zimbra/skins/_base/base2/skin.css
BODY { margin:0px;direction:rtl; }

/opt/zimbra/jetty/webapps/zimbra/skins/_base/base/skin.css
body { @ChromeBg@;direction:rtl; }

ajax and standard version are good for firefox but in ie they have problems.
Thank you for your help.