有人知道怎樣升級openwebmail嗎？

在原始網站有提到 [url]http://turtle.ee.ncku.edu.tw/openwebmail/doc/faq.txt[/url]

[b]Q: How can I upgrade from old version of Open Webmail?[/b]
A: Each version of openwebmail is made to be backward compatible with
old ones, no user setting or mail message will be lost after upgrade.
The upgrade steps:
1. make a copy of your old openwebmail.conf
2. install new openwebmail in the same location as old version
3. update the new openwebmail.conf with the setting in old one.

[QUOTE][i]最初由 bad 發表[/i]
[B]openwebmail已經出到1.53了，請問有人知道怎樣從舊版升級嗎？謝謝！ [/B][/QUOTE]