How to reuse backup on Time Machine on Snow Leopard after a logic board change, after choosing wrong option on popup

After my logic board was replaced, I connected my laptop back to my network, and Time Machine gave me a popup, as shown on this thread:

How to recycle/reuse/continue Time Machine for a new Mac?

I misread the question and clicked on "Create New Backup" when I should have clicked on "Reuse Backup" to connect to my old backup file. How can I trigger that popup again? Turning Time Machine on and off does not work, and the instructions on forums to fix via terminal doesn't work because snow leopard is missing the fsaclctl command (and I'm also not familiar with terminal commands.)

Thanks.

Solution 1:

Since Lion you can use tmutil:

sudo tmutil inheritbackup /Volumes/DISKNAME/Backups.backupdb/COMPUTERNAME