Lets assume that this entry specifies your FTA32 drive
/dev/hda6 /home/arjun/windows auto defaults 0 0
If it is so indeed than you should be setting filesystem to vfat and the main thing -
change defaults to user,rw,noauto:
/dev/hda6 /home/arjun/windows vfat user,rw,noauto 0 0
For more info look here
As the mount piont resides within your home directory I assume it has full acces priviliges for user arjun.