How to mount fat32 partition in Linux as read & write for everyone

On my EEEPC 1000H I wanted to have a shared partition being able to use it from Windows 7 and Eeebuntu.

Edit your /etc/fstab as follows (change /dev/sdaX to your shared partition location):
/dev/sdaX /mnt/shared vfat defaults,user,auto,umask=0 0 0

Now it should automatically mount the partition and it should be readable and writable by all users. If you want to disable auto-mount of the partition, replace auto with noauto.