connecting powerbook g4 to samsung lcd le32 r7

does anyone know how to connect a powerbook g4 to a samsung lcd le32 r7. At the moment im using a dvi to vga adapter. The mac can see the tv but the tv cannot see the mac. i have tried different modes on the tv and different screen resolutions but none seem to work. The adapter works fine with a normal crt monitor is it worth buying a dvi to vga cable or does anyone know how to get it to work via dvi hdmi?

powerbook g4