iPhone syncrestorebackup after hdd crash 3G

Welcome to the forums!
Your backups are stored here:
On a Mac: ~/Library/Application Support/MobileSync/Backup/
On Windows XP: Documents and Settings(username)Application DataApple ComputerMobileSyncBackup
On Windows Vista: Users(username)AppDataRoamingApple ComputerMobileSyncBackup
Your itunes library is located here:
Microsoft Windows
Documents and SettingsusernameMy DocumentsMy MusiciTunesiTunes Library.itl
Documents and SettingsusernameMy DocumentsMy MusiciTunesiTunes Music Library.xml
Replace the files on your new computer with the backups you recovered. Place your iphone backup in the proper location.
Authorize your new computer, store>authorize this computer.
Disable auto sync when an ipod/iphone is connected in itunes under preferences.
Make sure you have at least one contact and one calendar event in what ever program you use for that purpose on your pc.
You need to transfer any photos on your phone to your new pc before you sync.
When you connect your phone, select restore from backup & select the backup you placed on your computer. Make sure you have at least one contact and one calendar event in whatever programs on your pc you use for that purpose. At the prompt, when you sync, select merge data.
MacBook Pro