I realise this is NOT supported at all yet, but I did have it working, before I nuked my system. Now I don't remember how I did it. Ivan had created an AA howto metapackage, but it's gone now.
I can set QT_XFT=1 from a shell and then launch KDE app's from that shell and have AA, but where do I set this to be enabled from boot again? On a similar topic, I made a new AA font for my daughter. Where do I install this and set it up so X and KDE can find it? Thanks for all the hard work and help. Cheers, John Gay