I suspect your home PC is Win 7 64 bit and your work PC is Win 7 32 bit.
Premiere Pro, After Effects and SpeedGrade are all 64 bit only and require 64 bit hardware and operating systems.
http://www.adobe.com/au/products/premiere/faq.html#64bit-support
They will not install or run on 32 bit systems so, on 32 bit systems, they will not be available for download in the AAM.