256mb card driver

I have a 256mb card and when I plug it into my laptop sd port nothing happens. Im assuming I need an outdated driver but the driver page is useless. The only number on my card is on the back and it says  AR0508CT. Plugging this number into the search engine obviously returns zilch. Anyone have an idea where I can get the driver, or think that maybe its something else? I appreciate the time…thanks

the card does not have a driver. the driver would be for the reader not the card. the reader should use the generic mass storage drivers that are native to the operating system. 

what operating system are you using?