If you go to Control Panel\System, the Windows Edition section will tell you what's installed.
What do you mean by it was wiped clean? If the drive was reformatted, it shouldn't make any difference what was on it before. You can't install SP2 unless SP1 is installed and you can't install SP1 unless the base version is installed. I'm assuming the VHP disc is just the base version. In that case, you should install it and then download/install SP1. Let it download all the updates and install them. Then download/install SP2 and do the same.