urldownload to file problem

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VC8.0

C++

I am using urldownloadtofile to download a web content as below

CBSCallbackImplPX callback;
callback.nTitmeOut=10;		//"http://www.zoominfo.com/login","http://www.google.com"
if ( URLDownloadToFile( 0, "http://www.zoominfo.com/login", "a.html", 0,&callback ) != S_OK )
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class CBSCallbackImplPX : public IBindStatusCallback 
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//--------------------------------------------------------------------
STDMETHODIMP CBSCallbackImplPX::OnProgress(ULONG ulProgress,
										   ULONG ulProgressMax,
										   ULONG ulStatusCode,
										   LPCWSTR szStatusText)
{
	try{
	m_endDownload=clock();
	int nTimeTakenForThisDownload=0;
	nTimeTakenForThisDownload=((int)( m_endDownload -m_startDownload)/CLOCKS_PER_SEC) ;
	if(nTimeTakenForThisDownload>=nTitmeOut)
	{
		////CMTLog::WriteLogMT("Download cancelled by client");
		return E_ABORT;  // Download canceled by the client
	}
	return S_OK;
	}catch(...)
	{
	int x=0;
	}
}

I have used here callback function and checking for custom timeout through OnProgress()
It works fine ,If i give 20 sec time out or even 2 sec timeout it is coming after that time and it is been possible only because it frequently callsback OnProgress().

But if I try to open a page which have the probability to get time out before desired time.[like trying to open Zoominfo.com from a gateway where it is blocked]it is not calling OnProgress() for around 5 minute.

I have IE8 so as Microsoft told their default timeout in IE8 is 5 minute.
is that the reason for what I found that OnProgress() is not been called.
from urlmon.dll the call directly came to STDMETHODIMP_(ULONG) CBSCallbackImplPX::Release()?

Is there any way so that I need not to wait for 5 minute[only 20 sec is enough for me]
in case if the url is not responding?

for further details please refer to this link:
http://support.microsoft.com/kb/833301