Perception clarifications

[Beek Gwenders of Croodle]

I am still unsure when and how to call for a Perception roll.
The rogue character in my party approaches every door by placing her ear close to the surface and listening to noises from the other side. Should I grant her any bonuses? Or the roll is the same as one walking BY the door while exploring the dungeon and listening "casually" to environmental noises.
Does the fact of being actively looking for noises give a bonus (or a malus if you're not caring or distracted)?

[Ughbash]

Beek Gwenders of Croodle wrote:

I am still unsure when and how to call for a Perception roll.

The rogue character in my party approaches every door by placing her ear close to the surface and listening to noises from the other side. Should I grant her any bonuses? Or the roll is the same as one walking BY the door while exploring the dungeon and listening "casually" to environmental noises.
Does the fact of being actively looking for noises give a bonus (or a malus if you're not caring or distracted)?

Well if the party stayed back 30' to not interfere and tried to be quiet, I would give the rogue a +2 Circumstance bonus for his listen attempt.

Also if he is willing to spend a full minute there straining his ears listening for somethign on the other side... You could say he has taken a 20. (10 rounds 2 move actions a round so 20 times longer than reglarly needed).