I am still a newbie so I may be wrong but I think this is how you do it.
In a terminal window type-
mkdir /fat32
mount /dev/hdb1 /fat32
mkdir /fat32 creates a top level folder called fat32
mount is the command to mount something :=)
/dev/hdb1 is the location of the thing to be mounted. Replace hdb1 with the location of your fat32 partition.
/fat32 is where you want it to show up in your file tree. The folder you created earlier.
You will have some permission troubles to solve and you will probably want the partition to auto mount each time you start Fedora. Those things are explained in this web page here -
"How to access a windows hard drive in Fedora"
http://foolish.fedorausers.org/mount/