Well, While I was on hold for Customer Service, I managed to solve the issue on my own.
I went into the Wireless connection Properties, under the Wireless Tab, I checked the box to "Use Windows to configure my wireless network settings".
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I was then able to see a list of available wireless networks within range, and subsequently connect to my wireless network. I have a stable 300mb/s connection.
I did end up speaking to Donna at Customer Support, who was not very much help, and rude. She proceeded to guide me through uninstalling and installing the new driver. I mentioned that I would prefer using the Site Manager to configure my wireless adaptor, however she simply mentioned that there seemed to be an incompatibility with it and my system, asked me to "keep an eye on my connection for problems, and call back if I experience any other issues", and then promptly hung-up.
My question to you all is:
Are there any benefits of using the DLINK Site Manager as opposed to using the Windows native configuration? As far as I can see, WPS is only accessible from the DLINK Site Manager... but is that it?