What has my Group been Assigned too

Does anyone know of a way to find out where a User or Group has been assigned?

Its easy to know what Groups a user is a member of but what about where there groups have been assigned.

Example:
You have a group called SecAccesLevel1 and you want to discover every Computer/Resource/Item that Group has been assigned too.

Just clicking around you find that there is a subfolder under a Share that the Group has been assigned access too. The Root folder had given the Group ?List Folder Contents? but the sub folder has given them Full access to that sub.

So just to reiterate the question, other then stumbling onto this groups assignment to this folder how would you have know that they had access.