How do I mount an SD card?

I have an SD card (for a Palm Tungsten) that I would like to mount in my card reader to put music on. I used to be able to do it, but now I can't. The SD card in my 4-way reader is /dev/sdb. I tried "mount /dev/sdb /media/sdb" and I get unknow filesystem type. I've tried vfat and smbfs but those don't work either. Anyone have any thoughts? Thanks, Tom -- Tom Nielsen Neuro Logic Systems 805.389.5435 x18 www.neuro-logic.com