Sending commands and polling status via http of ethernet enabled devices

I have bought a webrelay from controlbyweb (http://www.controlbyweb.com/webrelay-10). This device has 10 30amp relays and also has an ethernet interface. It can accept commands like (http://192.168.1.2/state.xml?relay1State=1&relay3State=0). How is it possible to send such a command from VERA to the device?and how is it possible to poll for the state of the relay (GET /state.xml?relay2State=1&noReply=1)

You may want to ask this in the LUUP forum instead. One of the mods may spot this and move it there anyway.

http://wiki.micasaverde.com/index.php/Luup_Lua_extensions#function:_wget

Usage:
http://forum.micasaverde.com/index.php?topic=4508.msg24230#msg24230

Thank you very much for your replies. I need to get the status of the relay by polling its status and use this in my scenes.
How is it possible to assign the results from an xml query to a variable in VERA?