Connecting Xbox360 to PC Monitor - Need help!

Hey everybody,

I need some confirmation on whether i'm buying the right adapters to be able to connect my 360 to my PC monitor, as well as getting sound through my pc headset (logitech g35).

Here's links to the two adapters I think I have to buy:

Stereo to RCA for headset sound > http://www.newegg.ca/Product/Product.aspx?Item=N82E1688...

DVI to HDMI > http://www.newegg.ca/Product/Product.aspx?Item=N82E1688...

If these aren't the right adapters, here's what I need: I want to connect my xbox 360 to my monitor (samsung syncmaster 216BW) via hdmi, as well as get sound through my PC headset.

Thanks alot.