Well for one, Nero has it's own ASPI and should work as is, with out disabling XP's burn engine. If you do need ASPI for another app (I needed it for CDex to work properly), just go get it from Adaptec, no need for workarounds, Adaptec provides it to anyone. Do follow the instructions for XP installation, though. Adaptec recommends against using 4.60 for XP, get a newer one (I'm using 4.71.1 with no problems).
You are using a current downloaded version of Nero, I hope, and not an outdated disc version.
Also note only the 1st and 4th entries are needed for XP.