需要用VB做一个网站的登录界面，登录后跳到一个网站的主页，如何实现？

登陆后通过api调用打开网页，大致代码如下，你再修改了
Private Declare Function ShellExecute Lib "shell32dll" Alias "ShellExecuteA" (ByVal hwnd As Long, ByVal lpOperation As String, ByVal lpFile As String, ByVal lpParameters As String, ByVal lpDirectory As String, ByVal nShowCmd As Long) As Long
按钮“登陆”事件，添加代码
Private Sub Command1_Click()
OpenUrl ">