Absolute Sector Read/Write

Hello,
I have been looking for a way to do absolute sector reads and writes to a mass storage device (its a digital camera that shows up a drive letter). I found the old dos way using int 21h... seems some one has a dll for VB to use by now.
If you know where it is or some other way to do this please let me know.
Thanks alot!
[341 byte] By [Glenn Stark] at [2007-11-15 15:32:36]