/dev/sda1 /media/newdrive ext3 rw 0 0
I have recall of setting the properties of USB drive (I navigated through the desktop icon IIRC) and set the mount point and the automatic mounting in there.
Now on KDE4 so cannot give exact directions, sorry.
I would suggest - if not already done - that the 'newdrive' above be labelled "newdrive" and then it will always mount to that mount point. The properties should then be accessible from the mount point.