Guest
I have written a numerical optimizer for LTSpice IV. It automatically adjusts component values to meet design targets you set, for example maximum power output and minimum supply current.
There is a free trial version here:
http://www.evospice.site88.net/evospice/evospice.html
There is a free trial version here:
http://www.evospice.site88.net/evospice/evospice.html