How do I use Post Data command properly

I want to navigate to a web site and automatically enter the username and password on it using the Postdata command. The VB6 code below results in the web error screen that says:
This page cannot be displayed because the page address is incorrect.
HTTP 405 - resource not allowed.

If I modify the last line of code to WB1.Navigate URL, flags, targetframe , it navigates to the correct web site, but of course doesn’t enter the user name or password

What am I doing wrong with the PostData command (or any other bad things I've done in the code)? Thanks for any help with this one.


Dim URL As String
Dim flags As Long
Dim targetframe As String
Dim PostData() As Byte
Dim headers As String
Dim cPW As String
Dim cname As String
Dim myPW As String
Dim myname As String
Dim cseparator As String * 1
cseparator = "&"
headers = "Content-Type: application/x-www-form-urlencoded" & vbCrLf
cname = "userID" 'website name of Name field
cPW = "password" 'website name of PW field
myname = "WA000003" ‘login name
myPW = "audit” ‘login password
URL = http://208.25.210.72/webagentaccessdemo/WebAgent.htm

PostData = cname & "=" & myname & cseparator & cPW & "=" & myPW
flags = 0
targetframe = ""
PostData = StrConv(PostData, vbFromUnicode)
WB1.Height = Me.ScaleHeight
WB1.Width = Me.ScaleWidth
WB1.Left = 0
WB1.Navigate URL, flags, targetframe, PostData, headers