If they are not in the right position there is nothing being picked up for the tuner to "lock" onto.Without a "pretuned" channel ,you can't find where to position them .
If possible,see if you can take your laptop to somewhere where there is a known good antenna (preferably an outside one) ,plug this into your laptop and tune your channels on that.
Once back in your room,you can plug your indoor antenna in and move it around until you find a place where it might work.
My experience with USB stick tuners and indoor antennas is that they suck.
USB stick and many PC tuner cards usually need more signal that Set top box's or TV's with built in digital tuners generally need to work and this is compounded by the fact that indoor antennas generally scrape the bottom of the barrel regarding strong clean signals.
TV signals and in particular UHF ones as you are trying to receive don't penetrate buildings very well.
You may find that an outdoor UHF antenna will work better indoors than some tricky dick indoor antenna but it must be mounted vertical for the transmitter you are aiming for.
Another trick that may help is to borrow an analog TV (or try the analog tuner in the stick if it has one) and see if you can get some analog channels first. Use this to help find a "better "position for your indoor antenna and then try another digital rescan.
Hope this helps ,Bellotv
Thanks BelloTV. I'll see if I can test the signal via the Common-room TV's antenna. Hopefully its pointed towards Little Duval, otherwise I'm screwed. The Eyetv is Digital only, as a Hybrid was well and truly outside of my budget. Other people have been able to connect via Digital cards in my dorm, so here's hoping this is fixable!!