You can try the install and see if it gives you the option to NOT tick the SP2 package, but you might have to search in their forum for any AutoPatches that were released before SP2 came out. Or try Google. That might be easier. Some off-site might have it archived.

I've only used it once, since I just found it recently. But it seems to work pretty much the way it would work if you went to Windows Update. And I waited a long, long time before I allowed Windows Update to install SP2.