Connecting mac mini to LCD TV

[maxperez46]

When i connect my mac mini (G4-Tiger) to my samsung (ln52a750) LCD TV with a HDI-DVI cable, I get "no Signal" on the screen.
When I connect the mac mini (sem as above) to the LCD TV, with a DVI-VGA cable, I see the apple log and by the time is getting the OS load, I get "invalid Mode" and then "no Signal" on the screen.

I downloaded SystemRes X as suggested in some of the threads and change the resolution, but it seems that it was not saved.

Can you tell me step by step how to fix this problem.

Thanks
Max