wmp "playto" function

i have a new computer and windows 7 home premium installed. i have ordered a western digital "live tv hd media player" and do research prior to its arrival. i stumbled upon a wmp function called "play to". but the media player that came with the windows version i have does not seem to have or at least i can not find it. if want to stream media to tje wd live hd media player will i need the "play to" function? if so where would i find a download for it, the only one i have found is for windows 7 N or NK versions and i am not familiar with those version at all. i hope this was the correct forum. thanks, larry

thanks so much for the quick response

i read the two articles but the "play to" function does show up in either the context menu or the top of the task pane and i do have streaming enabled. thanks
never mind i did find it ater i click on the play button at the top right but it says there is no device but i am streaming using tversity(a media server software} from my computer to a directv hr24-500 hd dvr.