Credit goes to xcsdm from XDA-Developers
Use adb to push both the su file and Superuser.apk to /sdcard/
Follow original rooting procedure, once at root (#) prompt in adb recovery
cat /sdcard/Superuser.apk > Superuser.apk
cat /sdcard/su > su
ln -s /system/bin/su /system/xbin/su
chmod 06755 su
Done. I've now had Autokiller and a couple other apps request SU, and everything seems to be working like I would like.