ok cool!
seems i'm on my way, being a noob the road is pretty long and the learning curve is pretty steep (imho) but hey, im learning a lot from this, which is my primary goal anyway! 
fyi: yesterday i started my c# backend app, build a nice class to handle (incoming) connections, which worked with a simple client app. 8)
Tonight i'm planning on coding methods for sending and receiving data. Once that's finished i can sink my teeth in some arduino code (if wlan == connected than connect to socket, once socket == connected, send back any incomming data)
Once i'm there i can think about sending commands for turning on / off a led.
Does this path sound logical or would you take a different approach?
again, thx for the help!