Hi TiR
Just wanted to send some support. I attend two churches - one is a large evangelical church, very full with couples/families where I have never felt quite accepted as a single Christian parent, and sometimes have to explain where my non-Christian dh is, but which has some great teaching/special events and good kids clubs in the holidays. My other, local church is small and liberal C of E and it's much easier to go to and just be me.
It is really hard getting the balance between finding a stimulating lively church which is family based and right for you and your dcs, and one at which you will feel comfy, but I think that it is worth continuing to shop around, until you have.
The Salvation Army certainly isn't all tambourines these days! Notsofarnow will be able to fill you in on the details. I'll ask her to pop in!
Working out your relationship with your dh and giving up the idea of being the Christian couple you thought you were is something that others on MN share, and you may want to post about that separately. However, you can still have an enriching personal life with God and will maybe able to find a faith to which your dh is drawn again one day . . .
Do think about joining us on the Christian Prayer Thread on here. It was a great source of fellowship to me, when I struggled to get to church, and it means you can answer those enquiries of "where do you fellowship now?" with the answer "Online as part of an international, mainly female, parents fellowship group"