I found out by reading through everything the exact .nets you need for each one.
HHS Remake
4.2 (currently in beta)
HHS
3.0
HHS2
3.5
now installation troubleshooting should be on the Microsoft website. Also don't try and get this third party(I.E. Megaupload or any other site besides the official), Microsoft releases the .net framework for free so getting it from them is best.
Code:
http://www.microsoft.com/net/