Yo_mamali and I have been exchanging mail in private but for anyone else here that is interested here is some useful information.
The TV he has is an NTSC, 4:3 Aspect ratio Tube type that will require a digital converter to view over the air digital broadcasts after February of 2009.
(that date may be extended yet again) For anyone who is connected to cable or satellite , there is no change needed. IF you own a new flat panel TV it probably already has an ATSC tuner which will be able to view over the air digital broadcasts in both HD and SD (standard definition) now and after Feb 09.
There are government websites that offer discount coupons for the decoder boxes and other ones that offer advice on which antenna is best for your area,
A good place to start is http://www.hdtvantennalabs.com/index.php
On TV they often advertise the other sites as a public service.
Hope you all switch to HD it s truly awesome!