Thanks for your replies. There are loads of them so it would take forever to screen shot them all. Have done that with the most abusive ones. Would like to have all of them. Gwendoline how do you access them via iTunes? Apple responded to me saying there was no way of saving/getting copies of messages?
Are you on mac or pc? If Mac there's a an app called Phoneview that looks pretty good and will save the messages off for you in a PDF amongst other things. There's a $30 charge though so depends how important it is.
I've got a pc but my mums got a mac. I'd prefer not to copy them onto her computer if possible as some are private. It's very important so will pay as long as it would work. There are various software(?) advertised via a google search but I wouldn't want to risk any of those without hearing from someone that they've actually worked. I'm suspicious that they might be scams.
Just tried the trial version of that and it looks good so hopefully it's what you want. I might have to upgrade myself. I've got all the congrats messages when I had my dds so wouldn't mind keeping those safely.