a question about rogues

[Face_of_Bo]

Opportunist
Type of Feat: Class
Prerequisite: Rogue 10
Specifics: The character gains a +4 competence bonus to attack rolls
when making attacks of opportunity.

I have 2 questions concerning this feat:
1. when making a successful sneak attack have I made an attack of opportunity so that I gain +4 to attack?
2. can an attack of opportunity be made using a range weapon, specifically a bow?

[Bargeld]

An attack of opportunity (AoO) is a single extra melee attack (per round) that is automatically taken when an enemy makes themselves vulnerable, such as moving in combat (see also tumble and spring attack) or casting a spell. This attack is made at full base attack bonus and replaces an attack in either the main- or off-hand attack sequence, whichever made the last attack. (That is, the attack following the AoO will be at -10 relative to the attack before the AoO.) Making an AoO with the main hand results in a bonus attack (as described in attacks per round) being added to the round, while an AoO with the off-hand results in an extra off-hand attack being added to the round.

Situations which provoke AoO
drinking a potion
casting a spell
firing a ranged weapon in melee
non-combat movement while in melee
a disarm attempt (not improved disarm)
fighting unarmed without the improved unarmed strike feat

[Rufio]

1. no
2. no

[Bargeld]

??
no
no
!!

[Rufio]

oh, yeah, thought I read sneak attack. changed.