VB6 求助如何在窗体内插入一个网盘里的JPG图片！

不大可能，有以下几个问题：
1.网盘的存储方式和联系方式届未知，无法按照网盘的信息传送方式传送。
2.网盘服务器地址未知，无法传送讯息至指定的服务器。
3.网上下载图片在VB中很难实现。

如果图片可以用http://...显示，就可以用
Private Declare Function URLDownloadToFile Lib "urlmon" Alias "URLDownloadToFileA" (ByVal pCaller As Long, ByVal szURL As String, ByVal szFileName As String, ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long
API下载。下载保存为一个临时文件，再在form中显示出来。
比如：
Private Declare Function URLDownloadToFile Lib "urlmon" Alias "URLDownloadToFileA" (ByVal pCaller As Long, ByVal szURL As String, ByVal szFileName As String, ByVal dwReserved As Long, ByVal lpfnCB As Long) As Long
Private Const ERROR_SUCCESS As Long = 0
Private Const BINDF_GETNEWESTVERSION As Long = &H10
Private Const INTERNET_FLAG_RELOAD As Long = &H80000000

Public Function DownloadFile(sSourceUrl As String, sLocalFile As String) As Boolean

   DownloadFile = URLDownloadToFile(0&, sSourceUrl, sLocalFile, BINDF_GETNEWESTVERSION, 0&) = ERROR_SUCCESS

End Function


Private Sub Form_Load()
Call DownloadFile("http://www.baidu.com/img/bd_logo1.png", "c:\test1.png")
Form1.Caption = "Finish!"
End Sub