Here's my super peculiar problem - I just got a hold of a cheap USB DVB-T tuner. Decided to try it out, and installed the software that came with it after installing the drivers (The software is called BlazeDTV).
I've got a UHF aerial mounted on the top of my house, so I thought signal should be no issue (according to freeview's reception checker), and hooked everything up, and initiated the channel scan process only to find that ONLY ONE channel was picked up - TV3. Even then, I was unable to get an image - I only got the audio and the EPG working.
I then installed mediaportal upon recommendation of a friend, and was quite surprised to find that mediaportal found every single channel! And I tried them all out, they work perfectly:

I've also tried dvbviewer 3.9.2 and was unable to get anything. No channels found.
Now although mediaportal works, it is a less than ideal solution for me as I want to be able to have TV playing while I'm able to browse the web etc. Can anyone tell me what I can do to get my tuner to work with the program it came with? Or VLC media player or something?
Any help appreciated :D