new PC

[Rev Rico]

Hi guys,
I got a new PC and am transferring over my games. Rather than do new installs and updates, I just cut and pasted them using an external drive. I tested MG and Bulge, they work, but Kharkov asks for a Serial Number and Tunisia failed to start because of a config problem. Since those two were direct downloads from Tiller, how do I get new installs?
Of course, I am asking JT Software but I figured I'd ask you all here, too.

Thanks
Bob