Hey there i have a SDHC card in a card reader that i keep some of my important data on and i was wondering if there was anyway i can make it were you can only access it only with a password?
Just buy a USB drive, there pretty cheap. you can just transfer your information over to the USB drive. here's a FREE software that allows you to lock your USB dive.- http://www.newsoftwares.net/usb-secure/ .Theres USB drive out there that come with a built in security features but cost more than a regular drive.
Actually, you could use truecrypt to partition and encrypt the drive. not sure if its what you want though. Truecrypt is free software and you can also encrypt your whole HDD