Doubt resizing ext3 parbreastion

Hi,

I had the following parbreastions in my harddisk:

dev-hda1 reiserfs (for REDHAT) 30Gdev-hda2 swap 1Gdev-hda3 ext3 (for SUSE) 9G

As I didn't want REDHAT and now I like SUSE, my intention was to delete REDHAT parbreastion and increase to its maximum size the SUSE parbreastion. I used qtparted to deletedev-hda1 anddev-hda2, but I couldn't resizedev-hda3, so I thought about the following solution:

1- create extended parbreastion after deletingdev-hda1 anddev-hda2 in its "space", so nowdev-hda4 2- In this extended parbreastion, to create

dev-hda5 30G intended for SUSEdev-hda6 1G for swap

3- I copied all the info ofdev-hda3 todev-hda5 using: dd if=-dev-hda3 of=-dev-hda5 4- Modify grub to boot SUSE fromdev-hda5 instead ofhda3

So it works, now I can boot fromdev-hda5, but I thought that the size of this new parbreastion would be 30G, and in fact it is 9G (the same size that hda3). Maybe it is due to the fact that "dd" copies exactly the hda3 parbreastion to hda5 including its size.

So does anybody know how to enlarge hda5, or it is not possible ? Is there any other to resize my SUSE hda3 parbreastion ?

Thanks