just download PIM Backup search Xda for it. It backs up everything including SMS and (MMS) I believe
Found a version on the XDA FTP server HERE....dunno if it's the same one you used to do the backup with?? Give it a go, see what gives
@austinsnyc - the OP didn't ask "what's the best program for backup up contacts, SMS, etc"....they asked where they could find the program they had already used to do a backup in order that they could do a restore
@etijburg - the best "PIM" backup you'll get for nothing is the one that @austinsnyc mentioned; DotFred's PPCPimbackup, which you can get from HERE for future backups
Put the .exe in the same directory (My Documents in the main or memory) of the sms_XXXXX.jaf file
Thanks a lot!