Syntax Error

Hi: Can any one please tell me how to i fix that problem on line:
objFile.WriteLine PostURL("http://ssdi.rootsweb.com/cgi-
bin/ssdi.cgi", "ssn1=" & social)
Thanks.
Error Type:
Microsoft VBScript runtime (0x800A000D)
Type mismatch: 'PostURL'
/deceased.asp, line 17

Browser Type:
Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR
2.0.50727)
---------------------------------------
Const ForAppend = 8
Dim objFSO: Set objFSO=CreateObject("Scripting.FileSystemObject")
Dim DBConn,rs,social,vpath,vfile,xLine
Dim WShell
Set WShell = CreateObject("wscript.shell")
vPath = WShell.SpecialFolders("MyDocuments") & "\"
vFile = vPath & "Deceased-Information-"
vFile = vFile & year(now) & month(now) & day(now) & "-"
vFile = vFile & hour(now) & minute(now) & second(now) & ".txt"
Set DBConn = CreateObject("ADODB.Connection")
DBConn.Open "Provider=MSDASQL.1;Persist Security Info=False;Data
Source=dec1"
sSQL = "select name1,ssn1 from dbtr where status_code=450"
Set rs = DBConn.Execute(sSQL)
Set objFile = objFSO.OpenTextFile(vfile, ForAppend, True)
Do While Not rs.EOF
objFile.WriteLine PostURL("http://ssdi.rootsweb.com/cgi-
bin/ssdi.cgi", "ssn1=" & social)
response.write(rs.Fields("ssn1"))
response.write("
")
rs.moveNext
loop