I've got 3 (5,4 and nearly 2) still get out twice in the week and most Saturday mornings. Just got to manage your time and build those brownie pionts. I spend all week being Mr Dad and doing as much as possible (no real hardship for me as I love being a dad) to take the load off my wife who also has a full time job and then on a Saturday she is happy for me to get out for a few hours with my mates. Its all give and take, and if you give more than you take (which you have to once your a dad) you'd be supprised what you can do.
You have to give it all up for the first few months, but slowly you can get back to it if you really want it.
Congrats Monkeychild, enjoy every moment, even those long nights. I found if you just accept your going to be up, you can enjoy it as extra time with your new son. Its **** ace being a dad.