|I've been having fun playing with them...they're so adorable and affectionate. Only problem is their mother seems too happy to see me...she's been jumping on me more and more...it's starting to hurt and she's a boxer so...ow..not good!!
Mamma Dog is excited to see you, she just needs to learn what is unacceptable behavior. My bet is she wants to please you and will learn quickly as soon as she learns what you do and don't want her to do. Here's a few techniques
1) When she jumps up turn away so she falls off you and and walk away from her. She's trying for your attention and by walking away you're not rewarding this behavior. If you stay and play with her you're actually training her to jump up. Come back a couple of minutes later and try again. She should rather quickly learn not to jump up, and after a few sessions it should be permanent. Since it sounds like she's just happy to see you I expect this method will quickly be all the training she needs to get this jumping up to stop.
2) If she's still persistant, grab her paws and hold her up just a few seconds beyond when she wants to get down. This makes it unpleasant and should discourage her.
3) Worst case, if nothing else works, push her off you by pushing on the side of her neck (not striking or throwing, but just pushing.) After she's off you continue to push and take her all the way to the ground (you many need to pull her legs toward you to get her to go down, but don't slam her down to the ground.) You want her laying on the ground with her belly facing toward you and you holding her down at the neck (and the body with your other hand if necessary.) You should try to go from the jump up position all the way to the ground in just a couple of seconds so the dog understands the correction is for that particular behavior. This is the "submission position" for dogs and to them is the ultimate in correction. As soon as she submits (that is: accepts the postion without struggling) you let her up. There's no need to continue to hold her down beyond that point and you won't get any better or faster learning by holding her down longer. If you watch Mamma Dog with the pups this is most likely the way she will correct them as they get older.
Above all, NEVER
use the knee in the chest method. Besides being brutal and threatening to the dog, it can also cause serious injury.
You're doing a great job. I just recently introduced some friends who are dog people to the joy of having a kitten (one I rescued.) They, too, are finding out how different dogs and cats can be, and how much fun each is in its own right. Sounds like you're greatly enjoying the pups. Keep playing with them, and mom too.