Wait, I'm sorry, I was wrong...you don't have the Open Lock skill, so you can't. Zingnoff and Soul Eater are the only ones who can try to open the lock. Alternatively, instead of opening the lock, you could also try to break down the door.
There's no strength requirement to try to bust down the door, although a high Strength certainly helps. Calethen seems to be the strongest in the party, according to the sheets, though.
Otihand, you can't try to pick the lock, only Zingnoff and Soul Eater can. You need the Open Lock skill.
...wow. Zingnoff smashes the first window and tries to jump into the house from there. He trips the trap on the window and the crossbow fires at him, hitting him. The bolt goes straight through his shoulder and injures him pretty badly. However, he does make it into the house by doing this. There is a clicking sound as the hidden crossbow begins to automatically reload itself. Seriously. You KNEW that window was trapped, but you went through it anyway?