Basically i had a problem with some apps not showing on the iphone even though they were synced properly. So i navigated to:

C:\Users\Ryan\AppData\Roaming\Apple Computer\MobileSync\Backup

and copied the sms backup file named:

"3d0d7e5fb2ce288813306e4d4636395e047a3d28.mdda ta"

so then i restored my iphone to 2.2.1, set up as a new iPhone, then went into the settings and deleted the existing backup (ouch im silly)

I then tried to copy & replace the:

3d0d7e5fb2ce288813306e4d4636395e047a3d28.mddata

file with the new file with the same name that was created when i set up the new iphone.

Then i restored again, this time selecting to setup the phone as a backup of my recent backup (the one where i thought the sms files were)

but when the phone rebooted the SMS were gone!!!!!!!!!!

Is there anything i can do?

Thanks