Hi M.,
I know what you are going through! Kids need playmates who are their own age, and moms do too!
Have you heard of the Albuquerque MOMs Club? It is a group of stay-at-home and working mothers in the Albuquerque area with children ranging in age from birth to school-age. There are chapters all over the city based on your zip code, and if you choose to join (there is a $15 annual dues fee) you will be placed in a playgroup with other mothers and children who are around your son's age. Check out the website for more info. I joined when my son was about 5 months old (he is now almost 2) and have really loved it! Aside from my playgroup, which meets weekly, there is a monthly calendar of events with lots of activities to do with other moms and kids in my area, so we are never bored or in need of playmates.
Good luck, and if you would like any more information let me know!
http://www.abqmoms.com/