浏览器要IE7以上，或FF，或CHROME

顺便贴一下gmail备份的存放位置

Where are Gears files stored?
Windows Vista - Internet Explorer
Location: {FOLDERID_LocalAppDataLow}\Google\Gears for Internet Explorer
Example: C:\Users\Bob\AppData\LocalLow\Google\Gears for Internet Explorer
Windows Vista - Firefox - Files are stored in the user local profile directory.
Location: C:\Users\<username>\AppData\Local\Mozilla\Firefox\Profiles\{profile}.default\Gears for Firefox
Example: C:\Users\Bob\AppData\Local\Mozilla\Firefox\Profiles\uelib44s.default\Gears for Firefox
Windows XP - Internet Explorer - Files are stored in the user local profile directory.
Location: C:\Documents and Settings\<username>\Local Settings\Application Data\Google\Gears for Internet Explorer
Example: C:\Documents and Settings\Bob\Local Settings\Application Data\Google\Gears for Internet Explorer
Windows XP - Firefox - Files are stored in the user local profile directory.
Location: C:\Documents and Settings\<username>\Local Settings\Application Data\Mozilla\Firefox\Profiles\{profile}\Gears for Firefox
Example: C:\Documents and Settings\Bob\Local Settings\Application Data\Mozilla\Firefox\Profiles\uelib44s.default\Gears for Firefox
Mac OS X - Firefox - Files are stored in the user local profile directory.
Location: Users/<username>/Library/Caches/Firefox/Profiles/{profile}.default/Gears for Firefox
Example: Users/Bob/Library/Caches/Firefox/Profiles/08ywpi3q.default/Gears for Firefox
Linux - Firefox - Files are stored in the user home directory.
Location: ~bob/.mozilla/firefox/<firefox's profile id>/Gears for Firefox
Example: ~bob/.mozilla/firefox/08ywpi3q.default/Gears for Firefox
Microsoft Windows Mobile - Internet Explorer - Files are stored in the Application Data directory.
Location: \Application Data\Google\Gears for Internet Explorer

What do the files do?
localserver.db - This is a SQLite database that keeps track of all files that are stored in the LocalServer across all domains. This file is used in the internals of the Gears code, and cannot be accessed from within a Gears program.
permissions.db - This is a SQLite database that keeps track of all domains that have been allowed to use Gears.
<domain>/http_80/<filename>#database - This is a SQLite database file that has been created by an application on <domain>
<domain>/http_80/<filename>#localserver - This is a folder that contains files cached by either type of LocalServer store, a ResourceStore or a ManagedResourceStore, created by <domain >

Chome的存放目录是：
Chome的安装目录\UserData\Default\Plugin Data\Google Gears\mail.google.com