For an example go to http://shredlikehell.com (hit the music icon) and download "baskethead". I used the wah just like that in the lead parts. Sorry, I'm not trying to shamelessly promote myself, but the topic came up and I did have a recorded example to share.
Have fun. I love the wah pedal. They are very useful indeed. And congrats on starting to learn the instrument.
Peace
Shred Like Hell