Any way to Activate Win7 without Internet or Phone?

Hello. I bought a Windows 7 OEM installation disc via EBay. It has a product key. I used it to install the Win7 on an HP ProBook laptop. I use this laptop to access certain old files (MS Office 2K files, for example). I have other desktops/laptops that run newer versions of Windows but these new versions sometimes have compatibility problems with certain older apps. So I use this old...