Can someone help me with a http command?

I have tested the command below in a web browser and it switches my Z-Wave light on ok.

htt p://192.168.0.151:3480/data_request?id=lu_action&output_format=xml&DeviceNum=3&serviceId=urn:upnp-org:serviceId:SwitchPower1&action=SetTarget&newTargetValue=1

So far I have created a new page and setup a TCP/IP Socket connection with code in the Activities page connecting to 192.168.0.151 port 3480. On the UI page I have put a couple of test buttons on it but I can't workout how to send the command i.e.

/data_request?id=lu_action&output_format=xml&DeviceNum=3&serviceId=urn:upnp-org:serviceId:SwitchPower1&action=SetTarget&newTargetValue=1

Can anyone tell me how best to do this?

Thanks

Steve