J.B.
Hi T.,
I know how you feel. We recently move here from St. Louis. I joined a mom's group called Mommyville. It is is southwest vegas. There is a website called meetup.com. This is where I had to go to sign up, but they should have groups on there for your area. I just met the group at the park one day. I would suggest finding one in your area. We do have a couple of moms who live in Henderson. If you look in the View (free neighborhood paper, there is an activities section and several moms groups have listings. It also helps you meet people too. I have never been to MOPS, but I have looked into joining. That is an activity that my mom's group does. They usually have an activity for you like a speaker and craft or something and arranged care for the kids (all at the same site).
Good luck and welcome to Vegas!