What do I need to get to put music on an SD card? What SD cards are compatible with the WII and DSI ? How do i know if my home computer has an SD card slot? If it does not, what devices can i use otherwise?

Hello my name is Malito kijiji and i have a question and it is the following.I have an SD card and i saw that you could transfer music and pictures to the wii SD card but i wanted to know if you need a special thing my computer does not have a port to enter the SD cards i wanted to know if you need a special thing.
Thank you for youre attention and please if you know anything please e-mail me ipod-boy@sbcglobal.net