In simple terms,for us simple folks.
The energy used to create space and time can be measured, however more information on this initial singularity will be forth coming by the launch of the NGST. The correlation between dark energy and the singularity energy I believe will be in concert with the expansion and creation point of our dimension in the multiverse theory.
If we can learn and understand the Macro energy involved in multiverse creation theory we can perhaps harness that energy and use it to advance our civilization to a type 1 civilization or even a type 2 civilization.
We really need to get beyond this restrictive one universe thinking. It should probably take another 1000 years of primitive behavior before this can be accomplished. Man I wish I could jump to the year 3009 A.D. What technological achievements will we have and people looking back and saying,"Look how primitive they were in 2009 A.D." So in closing your honor, I'd just like to say, "Find the distributing factor in singularity energy used for universe and dimension creation and the answer for where space ends will be a null question". I believe the intelligence used is exponentially beyond our present day capacity.