Backup all of the files you want to keep on an external drive. Install the new hard drive you want in it. Reinstall Leopard(or tiger). And then copy all of your files back onto your MacBook.
Purchase a larger hard drive that will fit in your Macbook. Purchase a shuttle to put the drive in so it will can be a temporary external disk. Download Carbon Copy Cloner
and clone your internal hard drive to your new hard drive.
Take the new hard drive and put it in the Macbook. Take your old hard drive and put it in the shuttle so it becomes your external.
Now… I know you can do this in a shorter step by removing the old hard drive and putting it in the shuttle first and putting the new hard drive in your computer and then cloning… but you risk loss of data by handling the old drive before a copy.
Backup all of the files you want to keep on an external drive. Install the new hard drive you want in it. Reinstall Leopard(or tiger). And then copy all of your files back onto your MacBook.
Purchase a larger hard drive that will fit in your Macbook. Purchase a shuttle to put the drive in so it will can be a temporary external disk. Download Carbon Copy Cloner
http://mac.majorgeeks.com/download4566.html
and clone your internal hard drive to your new hard drive.
Take the new hard drive and put it in the Macbook. Take your old hard drive and put it in the shuttle so it becomes your external.
Now… I know you can do this in a shorter step by removing the old hard drive and putting it in the shuttle first and putting the new hard drive in your computer and then cloning… but you risk loss of data by handling the old drive before a copy.