usb device not recognised

how do i fix this on my windows xp as i can not link to my nds lite anymore...it did one time only then i got the "usb device not recognised" window come up..!! Help how can i fix this...Pleeeaaaasssssseee..

What type of reader are you using for your MicroSD card?You probably need to uninstall the device, then try to reinstall it. Right click on the "My Computer" icon and click "Properties" then click on the Hardware tab, then click on Device Manager. Find the device, it will probably have a Yellow Triangle (like a Yeild Sign) on it. Right Click and choose Uninstall. Unplug the device from your computer.At this point you probably should reboot your computer just to be fresh, but you don't have to.Now plug the device back in, and try to let windows reinstall the new found hardware.