Accessing vfat drives from FC4

[Douglas Phillipson]

I'm dual booting a machine XP/FC4.  The user wants write access to the 
Windows drive from FC4.  I can mount the drives just fine but as a user 
I can't write to them.  I've converted the Windows drives to Fat32. I'm 
mounting them via fstab as vfat with:

/dev/hda1 /data1 defaults 0 0

The mount point (/data1) is 777 but a Linux user has no write access to 
them.  What am I doing wrong?  I need all users to have write access...

Thanks

Doug P