Questions about HD monitors

Do I need a motherboard that has a HDMI port and a HD monitor that has a HDMI port in order to watch HD stuff from my computer like Blu-Ray movies? Or would DVI ports on the motherboard and monitor suffice?

And if I want to connect my Xbox 360 to the monitor for HD gaming, would the S-video ports on the monitor provide that?

Thanks

If you wanna play the 360 get HDMI

Do I need a motherboard that has a HDMI port and a HD monitor that has a HDMI port in order to watch HD stuff from my computer like Blu-Ray movies? Or would DVI ports on the motherboard and monitor suffice?

And if I want to connect my Xbox 360 to the monitor for HD gaming, would the S-video ports on the monitor provide that?

Thanks

BPrimeTimeL