W7 RC X64 client on a SBS 2003 SP1 with ISA 2004. From this client I can see all other clients on the network (LAN) through Network in Windows Explorer. When I click on the icon on one of the XP clients nothing happens because there are no share folders that I have access to. However, when I enter \\computername\c$, I get the entire folder structure on that machine. Plus I can delete anything I want! Same thing happens when I change to a Vista client. I am thinking that entering this command bypasses the restrictions and security measures that come with SBS, right? Is this desired behavior?

Yikes I can imagine how that would concern many. This is from the Windows XP into the Windows 7 machine right?