Udev and fstab - beginners question

[malcolm]

Since this is my home PC I want anyone to be able to mount usb-mp3
players, DVDs, CDRW etc. I used to do this by just bunging 'users' in
the fstab options. Now something ( udev or whatever )  overwrites it on
every boot and then I get the message 'only root can mount etc etc' -
How do I make it so that everyone and their dog can mount anything. 

Ta

mal

FC3 Test 2 BTW