I will see what is different from SP3+. XP2ESD can handle nLite addons without any problem, so the one for x86 can be used and should work.
The addon by redxii and patch I released I hope will be useful to modern hardware with realtek audio chip.
@MilkChan I have checked your x86 HDA addon and it seems limilar to my addon for XP2ESD. Thanks for x64, I will build addon too. EDIT: hdaudbus.sys exist in SP2.cab in XP x64
Thanks, I'm currently working on AwayMode-KB902437-ENU(Media Center) Patch is assigned to SP2 not SP3. I found the original file And I'm reinforcing support for the kb927489 font that has been abandoned from SP2 as well.