Erm, the first picture has no relevant information, and the second and third picture have Display and Video Codec selected.24 will be fine, in any case.
You never choose output bitrate. You may be able to change the output bit depth and sample rate, but I see you are using Windows XP, so there aren't as many options. The things you can set will be in the Sound and Audio Devices control panel. There is a place where you can set sample rate conversion ('Best' is the one you want), and there may be some options specific to your soundcard, but probably there is nothing for you to set. What problem are you trying to solve?
IDT Introduces Low Power High Definition Audio Codec Optimized for Superior PC Audio ExperienceThe IDT 92HD71B features 4 stereo channels, and is compatible with the Intel high definition (HD) audio interface. The audio device provides stereo 24-bit resolution with sample rates up to 192 kHz. The dual digital SPDIF outputs enable simple integration with multi-channel consumer entertainment equipment, including audio integration with system HDMI video. The codec incorporates IDT proprietary technology to achieve digital to audio conversion signal-to-noise ratio fidelity in excess of 100dB. It also includes extensive optimizations to minimize unwanted audio artifacts, such as "pops", during system power up.