form:http://blog.csdn.net/cnjzy0106/article/details/5393371
代码如下：
卸载的
[UninstallRun]
Filename: http://www.xxxx.com/xxxx.html; Flags: shellexec runmaximized; Tasks: ; Languages:
安装完成的：
[Run]
Filename: "http://www.baidu.com"; Description: "打开百度"; Flags: postinstall shellexec skipifsilent;