[newbie] Mount permissions

[poogle]

I have got an internal LS120 (in place of my floppy) it works fine under kde
when I access ext2 "formatted" floppies, but if I try to mount vfat or msdos I
get a kfm error message that says "only root can do this" I can access vfat or
msdos as root or su as a user and mount -t ......... from a command line , I
can then click on the kdelnk to view the contents.
Has anybody any ideas why only root can mount as vfat or msdos, if so what do
I need to change to allow user access.
TIA