SalesForce: 让subscriber在安装Package时指定一些参数？ 不可能！

我真失望！

看这里：
http://boards.developerforce.com/t5/AppExchange-Directory-Packaging/How-to-enable-subscriber-specific-settings-in-a-managed-package/td-p/261763

Re: How to enable subscriber-specific settings in a managed package?

I don’t think there’s a way to collect the info during install. It would have to be a post-installation step. These instructions should be in your Customization/Installation guide. The place to store this type of information is in a Custom Settings record marked as Protected. You’d typically create a VF page that collects the info from the user and stores it in Custom Settings.