oh, forgot to tell you about the other lizardmen build thtas pretty useful. This one is the more castery of the two by far. Take the highest level of slaan mage priest you can, 2-3 shamans, temple guard and 2-3 units of skinks with kroxigors for some descent charge blocking. A regiment or two of saurus warriors as well depending on what you have for points.
so, you put the slaan mage with the temple guard so he can`t get beaten down as easily in hand to hand, use the priests for dispels and for the slaan to cast through (special rule) and use the skink regiments to charge into a unit with their kroxigors for the hard hits. Keep the skink regiments small and plentiful as they'll basically just be used to keep their troops tied up to take hits from your spells. You can also take salamanders with this build because their units are idealy gonig to be far away from you for most of the game.
I usually take a sideboard of a bunch more skink skirmishers because they're good for blocking ranged hits on the salamanders or whatever.
So yea, theres he other one for ya. hopefully that helps.
by the way, lizardmen have badass magic, and if you have enough points to swap the slaan out for lord kroak thats just rediculous. About hte only thing that'll compare is a vamprie counts army with lots of vamps and a high elf magic army. Tzeentch armies can too if they spec for casting but then they tend to be a tad light on the clsoe combat.
enjoy

-Zac