[SKILL_PROTO]
Duplicate Combo's skill and change the name to Equipment Page and dwVnum to 200

Here's an example:
200	Equipment Page	0	0	0	0	NONE								DISABLE_BY_POINT_UP	NONE_MAX	NONE			NONE_MAX					0	0	NORMAL	0	1	0	0

//

[PLAYER and PLAYER_DELETED]
Add equip_index as int and NOT NULL with DEFAULT 0
It needs to be AFTER horse_skill_point

Here's an example:
`equip_index` int(11) NOT NULL DEFAULT 0,