Cannot mount hard drive with live cd

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http://crunchbanglinux.org – Hi,I am currently using crunchbang linux 10, Currently my installation wont boot(something about the wrong PID) thats not my problem though. I decided that instead of finding out how to fix the previous problem I would just use a live cd to copy the files i need to another computer. So I booted into a live session and at some point was able to mount my hard drive with crunchbang installed on it, this was late at night so I decided that because i could mount it now I would be able to mount it again in the morning some time.My problem now is that I can no longer mount it and cannot remember the (HowTos)