The two main machines involved are:
Machine A: Sony laptop running Windows Vista.
Machine B: Desktop running Windows XP Pro SP3.
We are trying to get Machine A to access two drives in Machine B. We have shared both hard drives and Machine A has full access to the C drive in Machine B. No problem. Then we shared drive D in Machine B and no joy. We used the same sharing settings as the C drive, but are still not able to have full access to the D drive in Machine B. We are getting an error message that says we don't have the proper permission to access the D drive in Machine B.