You cannot edit the AA/AF settings in LFS, you'll have to do it via your graphic driver settings, the layout differs a little depending what type of graphics card you have got.
begin with right-clicking your desktop and hit properties, go to the last tab called settings, then advanced. you might find a slider or two around there somewhere.
                
            begin with right-clicking your desktop and hit properties, go to the last tab called settings, then advanced. you might find a slider or two around there somewhere.
 but still.. it looks WAY better! 
 .  Resolution might be a bit smaller than you rich folks with the latest and greatest at 1024x768, but I can increase to 1152x864, still keep AA/AF, and only drop down to a very playable 40 FPS.  The newer onboard chips are made by ATI and nVidia and aren't really that bad (for onboard of course).  They aren't anything like the old Intel Xtreme graphics of old.  It helps to have a gig or more while sharing 256 with the graphics.
 .