No. A sound card can be used without internet access, and the internet can be used without sound.
No, a sound card is a physical piece of hardware.
what is a wireless card
The only software you need to support headphone is driver for your audio/sound card what you get with your motherboard. If you lost that you can download from internet.
Yes You do need a sim Card
If your computer has a sound card there is no need to purchase a new one.
No , you don't need an SD card for the Internet. it'll work just fine without it.
Yes.
No, but you need internet connection.
no , you need wifi connection
You need to install driver for your sound card.
no, there is no such thing as a wii sd card, there are no sd cards made for wii, they are all universal, and to get internet you will need a wireless router, from there its pretty simple you can use a SD card for the wii
You can take the shortcuts, but that's it.