Ext3 Resize issue... Plz help!!

[awais_rauf]

I had a 7 GB Ext3 partition on which i installed Ubuntu Hardy Heron. As I added more programs i needed more space on Ubuntu partition so I resized my NTFS partition and added 15GB space to the begining of Ext3 partition using Paragon Partition Manager ( a windows utility). But when i booted Ubuntu again the filesystem size was the same (7 GB) and not increased as i thought it would. Now when i check the size on any partition manager it tells me that there is a 22GB Ext3 partition but on checking the filesystem sze from ubuntu it is 7GB.

Can anyone please tell me how to grow the filesystem up to the partition size.

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Below are the output of fstab and df
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-------------------------- /etc/fstab---------------------


# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
# /dev/sda3
UUID=c641164d-8ed7-4cf4-8068-68436a855409 / ext3 relatime,errors=remount-ro 0 1
# /dev/sda4
UUID=486cb6cb-2e46-44fc-8096-c16df7b8ccb1 none swap sw 0 0
/dev/scd0 /media/cdrom0 udf,iso9660 user,noauto,exec,utf8 0 0


-------------------------------- df -h ---------------------

Filesystem Size Used Avail Use% Mounted on
/dev/sda3 7.1G 6.4G 412M 95% /
varrun 252M 144K 252M 1% /var/run
varlock 252M 0 252M 0% /var/lock
udev 252M 48K 252M 1% /dev
devshm 252M 12K 252M 1% /dev/shm
lrm 252M 38M 214M 15% /lib/modules/2.6.24-16-generic/volatile
gvfs-fuse-daemon 7.1G 6.4G 412M 95% /home/awais/.gvfs
/dev/scd0 700M 700M 0 100% /media/cdrom0
/dev/sda2 15G 65M 15G 1% /media/disk

[devils casper]

Post the output of sudo fdisk -l command here.