Hi there and welcome to the forum.
I cried when I first spoke to my IP for the first time as I was so relieved to hear she was accepting my case.
Take a look at
www.iva.com for a list of companies and some reviews of these, always talk to 2 or 3 to get case specific impartial advice.
Again I was like you and up until the point of contacting an IVA company our payments were all up to date and my IVA was accepted without a problem.
All your disposable income will be paid into an IVA but you will have allowances for other things i.e food, toiletries, clothing, etc., A good company will explain all this to you in great detail.
You ask any questions you want on the forum and we will try and help.
We do have professional posters and they all come highly recommended too so if you want to contact any of them they can be found via the experts link. x
IVA final payment left the bank on the 26th January 2013...looking forward to a debt free future.