Son is 7 months now...
Well - Morgan just turned 3 on October 4 and she is our boxer.
We had Cole March 20 of this year and it has been amazing.
We brought home a blanket for Morgan to smell...and she to this day just loves to lay by him and give him kisses

In the beggining she was very curious...but we didn't pull the baby away...if she wanted to smell him, we would let her. We didn't want her to be scared of the baby or think that he was "off limits" to her.
After a few days, she just took it in stride. Actually, when I would feed Cole in the middle of the night, she would come into the nursery and either lay by my feet or sit next to me w/ her head on the boppy (nursing pillow) and I would pet her head.
She has been amazing with him.
Now that Cole is becoming mobile, she lays in the floor by him and actually drops her balls and toys on his lap as if to say "are you going to throw this for me or what!"
The only bad thing about her is that when she shakes (as most dogs do when they wake up from their many snoozes throughout the day) her floppy ears make loud smacking sounds against her head and I think that wakes him up sometimes!!!
Morgan has also been around children since she was a puppy w/ our many nieces and nephews, so that MAY have helped her adapt more quickly.
Just remember to give your boxer baby a lot of additional love throughout the day, since a lot of your time will now be spent with your skin baby. Don't ignore your pup and take time out to give him love 1 on 1 a lot so he doesn't get jealous!
There is actually a couple of pics in my gallery I think w/ Morgan and Cole.
That's it...good luck and congrads!