I have a creature. It needs to be a companion to the player when a particular item is in the player's inventory, and needs to disappear when the player drops the item, and then reappear when the player picks up the item again. It is not a creature that can be summoned with one of the built-in spells, so I can't just enchant an item and force-equip and force-remove it when my item is moved in and out of inventory. How would I do this, and what is a good setting for the follow?

begin V.Specialscriptif ( player->GetItemCount, "V. special item" => 1 )    "V.specialCreature" -> enable ; must be a unique Id    PlaceAtPC, "V.specialCreature", 1, 120, 0    "V.specialCreature" -> Forcegreeting ;you should set this to initiate the companion scriptelse    "V.specialCreature" -> Disableendifend( 

absoloutly no Guarrantee it will work but it's worth giving it a shot.

So far it is almost functional, though follow isn't working right, and a creature that is already out doesn't disappear when the item is dropped, allowing for "cloning." What are good numbers to put in the AIFollow I attached to the creature greeting?

put this on the item

begin V.specialItemscriptshort OnPCDropIf ( OnPCDrop == 1 )    "V.SpecialCreature" -> disableendifend

What are you doing this for, may I ask?

Edit: , 1, 128, 1 for the AI follow

I'd try something like this:
script on the ring

begin mrdSummonItemScript; global short mrdSummonshort OnPCAddshort OnPCDropif ( OnPCDrop )	set OnPCDrop to 0	set mrdSummon to 0elseif ( OnPCAdd )	set OnPCAdd to 0	set mrdSummon to 1	PlaceAtPC mrdSummonCreatureID 1 120 0endifend

script on the creature

begin mrdSummonCreatureScript; global short mrdSummonfloat timerif ( GetDisabled )	if ( timer < 5 )		set timer to ( timer + GetSecondsPassed )		return	endif	set timer to 0	setdelete 1	returnendifif ( mrdSummon == 0 )	disableendifend

Functional! Thanks all!

I could actualy use a script like that with gollum/smegol and the ring, that is a very nice idea actualy