SilentlyScreaming,
Thank you for your information. I am shortly to make another attempt at solving this mysterious problem however appreciate your suggestions, and will re-work the situation referring to your notes also. If there are no further replies from me, this will (fingers crossed) indicate success.
In the meantime, folks, if anyone else has any other suggestions, or believe another troubleshooting procedure exists which hasn't been brought to surface yet, please feel free to discuss.
Thank you once again SilentlyScreaming and to all further incoming advisers.