New Cloning Machine

I got a 'Kingwin' Power Dock for copying/cloning/backup.
First time cloning, from a 40 g drive to a 160 g drive.
Before, I used 1st Acronus, didnt like it- then Partition Wizard which is better.
With PW, one can simply transfer/combine the (in this case 120 g) unused portion to the new clone.
How would you do this on the fly?? Software?
I just got this Kingwin unit, it has no option for this.

I setup the 40 g hdd (Windows & all personalizations I want. Cloning 40 g is much faster (more than 10-12 times faster than say a 500 g drive, you are not cloning 450+ gigs of blank space)
Then stash the 40 g drive in a safe place. (I think I posted here about buying a number of 'identical' XP compatable mobos, dont have to start new computer (install os+) from 'scratch'.
This works, I know, I have some identical MSI computers I still use a lot (XP 64 bit & 8 g ram, easy & fast) I've had hdds fail on them & cloned from my stashed hdd.

Anyways, I'm rambling now, How to combine the 2 partitions??