R.C.
MOPS is a wonderful option if it's something you think you might be interested in. Check out their main site www.mops.org to check for a host location near you. There are several churches around Tulsa that host this bi-monthly, Christian group for moms of preschoolers and the preschoolers themselves.
Another idea would be to look for local playgroups. A couple that I've participated in here in town are Tulsa Metro Moms and also Metro Tulsa Moms. You can do a YAHOO GROUP search for these two.
Good luck! :)