How do i use an old time machine with a freshly installed Mountain Lion

I recently formatted my HD, that was on OS Lion, and installed a fresh copy of OS Mountain Lion. Is  it possible to still use my time machine machine backup (from before i formatted my hard drive) with the newly formatted HD running Mountain Lion? or do i just start from scratch again.
Thanks for the responses
MacBook Pro 2010
OS 10.8 (mountain Lion)

This is the closest thing to my query that I have been able to find. I recently installed ML on my late 2011 MBP. I have tons of backups from Lion and I want to continue backing up ML. I have hesitated to do so as I fear that I will not be able to recover my data and settings in the event that I decide to downgrade to Lion. If I was to downgrade back doe Lion; could I use a ML TM backup to recover my files and settings?

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