Do druids have the ability to convert learned spells into cure spells of the same level if they have good in their alignment like clerics do or does it change to summon spells?
That is an incredibly powerful ability, by the way. A druid can prepare whatever spells he or she likes and still focus primarily on summoning creatures. Druids are amazingly flexible.
Also remember that if you want to be Good, your only option is Neutral Good. I had to remind a player of that once who had put down Chaotic Good on his sheet.