If you are lucky you stick suports BDA (Broadcast Driver Architecture)
If it does
You could try the TV plug in for WINAMP
http://www.tv-plugin.com/index.php?id=5,0,0,1,0,0
or try a making a VB Script (Example is for Sydney Australia just change Bandwidth and carrierFrequency)
'(Paste below into notepad and save as 'test.hta')
<html>
<title>TV Tunner</title>
<HTA:APPLICATION ID="TVTest">
<head><body>
<OBJECT ID="MSVidCtl" CLASSID="CLSID:B0EDF163-910A-11D2-B632-00C04F79498E" WIDTH="100%" HEIGHT="100%"></OBJECT>
</body></head>
<script language=vbscript>
Dim objTuner
Dim objTSContainer
Dim objTuningSpace
Dim objTuneRequest
Dim objLocator
Set objTSContainer = CreateObject("BDATuner.SystemTuningSpaces")
Set objTuningSpace = objTSContainer("DVB-T")
Set objTuneRequest = objTuningSpace.CreateTuneRequest
Set objLocator = CreateObject("BDATuner.DVBTLocator")
objLocator.Bandwidth = 7 ' Set for Bandwidth
objLocator.CarrierFrequency = 226500 ' Frequency of tv station (Hard Coded to abc hd Sydney)
objTuneRequest.Locator = objLocator
MSVidCtl.MaintainAspectRatio = "False"
MSVidCtl.View objTuneRequest
MSVidCtl.Run
</Script>
</html>
edit: To make it easier to read.