用Delphi发送SMS问题!

我在网上看到了一篇关于'用Delphi发送SMS'的文章
首先通过下面的地址下载并安装微软SOAP工具包2.0:
http://msdn.microsoft.com/downloads/default.asp?URL=/code/sample.asp?url=/msdn-files/027/001/580/msdncompositedoc.xml
然后就可以使用下面的简短代码发送SMS了。uses
ComObj;procedureTForm1.Button1Click(Sender:Tobject);
var
SoapClient:OleVariant;
v:OleVariant;
begin
SoapClient:=CreateOleObject(’MSSOAP.SoapClient’);*********
SoapClient.mssoapinit(’http://sal006.salnetwork.com:83/lucin/smsmessaging/process.xml’);
SoapClient.SendTextMessage(’Number’,’MessageBody’,’Sender’);
end;
在*******那行里出现运行出错,说无效的类别字符串,请各位高手帮忙!