Aloha S,
A number of discussions on this topic can be found on this board.
Just try a search.
The up-shot is:
Many users have been able to successfully use C7 and OS 10.6.8
but some have reported graphic issues.
Specifically Menu bar disappearance.
I also believe there may be some work-a-rounds posted; just try a search.
Here are two examples:
HTH (hope this helps)
{‘-’}