USB ports not recognizing my Memory/USB/Flash drives

My macbook, 2 GHz Intel Core 2 duo (if that even helps), with Leopeord 10.5.5 's USB ports stopped working, but the weird thing is, when I plug in my iPod or mouse, they work. But when I plug in my Flash drive to try to open up some homework or SD card drive, anything that contains memory, it doesn't work, the computer shows that it has been plugged into my macbook through System Profiler, it also shows when it's gone, but the drive doesn't show up on my desktop and I can't find it anywhere. I know the flash drives are working because I tested them on different computers, safely removed them as well. Some people on a different forum suggested PRAM and SMC reset, I've done PRAM, but I don't see how it helps. please help! I need to be able to finish hmwk!!
Message was edited by: AEROpotatoe

I am having the exact same problem!
UGH

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