Hello

Anyway, I've recently acquired a copy of GalCiv2 Gold. I've been wanting to install it (especially because I've wanted to try out the new Dark Avatar expansion), but I've had some concerns about doing so because I already have a registered copy of GalCiv2 on my hard drive. I'm asking if there's anything I should know about overwriting a previous install, specifically:
1. Do I have to, or will I be able to, deregister the old copy before installing or registering the new one?
2. Will I have do delete any mods I may have installed on the original copy, or does the new install overwrite them automatically?
Thanks in advance for your help