Help! Several problems with first build

I just put together my first system and it runs well, but there are a couple of minor problems that you might be able to help me out with.
Necessary system info:
CM690 Case
Gigabyte EP35 DS3L
Windows Vista Premium 64

The problems:
1. I am unable to use the headphone or microphone jack on top of the case. I think I plugged everything in correctly, but I am not sure which cable corresponds with those.

2. I am unable to switch between headphones and speakers mid-game. I must quit the game, switch cables, then restart the game. Remember that I have to plug the headphones and speaker into the same port because the top one doesnt work.

3. I cant get my microphone to work at all, even when plugged into the back of the case. It works fine on my other computer. I think this may be a vista issue, but I dont really know.

Any help is appreciated.