Moving the OSS boot partition

I currently have a well functioning OSS system with four Windows XP, and one Vista system. I have also taken the advice that I saw a couple of years ago to set aside a partition that is reserved for OSS alone. BTW, I am using DD v10.

I have come to a situation where I want to add another system, and at the same time I want to clean up some sloppiness I created as a "beginner". The portion of the disc I am referring to follows:

There are the multiple operating systems in several partitions, and the final one is -

"final XP" .......This op system partition is followed by
Unused-1 ......1.5GB partition not currently used
"Bootstuff" ....2GB reserved for the Acronis OSS booting
Unused-2 ......2GB partition
Unused-3 ......1.5GB partition

What I intend to do is to delete "Unused-1". Then I want to expand "Bootstuff" into that empty space so that it follows immediately after "Final XP". I then want to reduce its size to 500k [from the other end] to minimize the wasted space, but still adjacent to "Final XP".   I will then delete "Unused-2" and "Unused-3" merge all the remaining space into a single partition.

Now...
The various Windows XP systems and Vista required that I supply the proper partition number and "correct" the partition offset when I install the image. I have never moved "Bootstuff". Does Acronis OSS have any particular needs that I should take into account? Since I am expanding it into the freshly deleted "Unused-1" and then shrinking it from the other end, the partition number of "Bootstuff" should not change, but the partition offset will be changed.   Anything else I need to be aware of?  Does OSS need me to tell it about the new partition offset, and do I need to edit the partition table the way I do for Windows XP?

Thanx
dc

BTW, is the a way in Disk Director to identify the partition numbers directly? I have been going through a trial and error method for each instal that I have done in the past.