SD Card IssueFollow

Alright so, I want to use this little Sandisk SD card to transfer some photos from my laptop to my wii. On the wii, it's fine; it sees it and can read/write stuff to it.

So, on my dell inspiron e1505 lappo-toppo, theres a little port for the SD cards that says above the hole "SD/MMC/MS/Pro/xD", so I assume this is where I pop in the said SD card. It goes in fine, clicks, and you need to press it again for it to pop out. However, while its in there, it does nothing. The computer fails to see it.

I've tried jiggling it, and rebooting the computer (cold and warm boot), and nothing seems to work.

Any ideas?

I'm using my Dell Inspiron E1505. The OS is Windows XP,