Vista - Cannot Access Shared Folder

I have a Desktop PC which is running Windows Vista Business. I have a folder being shared on it (with Everyone allowed)

File sharing is turned on, Password requirement is turned off.

I have two laptops. One Has Windows XP Home. It can see and access the shared folder on the Vista Business PC with no problems.

My other laptop has Windows Vista Home Premium. I need to access the shared folder on the Vista Business machine from this laptop. It can see the Vista Business machine, and it can see that it has a shared folder. However, when trying to access this shared folder from the Vista Home Prem laptop, it gives me an error message about not having permissions and that access is denied.

All 3 computers are in the same workgroup.

As it happens, the XP Home laptop has some shared folders. I AM able to see and access the shared folders on the XP laptop FROM the Vista laptop.

I am stumped. Does anyone have any ideas?

Also, from the Vista laptop I CAN access the "Public" shared folder on the Vista Business PC.

As such I don't believe it can be a firewall issue.

The permissions on the shared folder I am trying to access are set to Full Control for Everyone.

Kill the firewall just to see. I had the same problem and that was the answer. Haven’t spent the time to see if there is a way to turn off the firewall for individual folders.