I really like this game and I've also seen really awesome mods. But with the mods part I have a problem...

I have the 1.04 version of Sins Of A Solar Empire, I've downloaded two mods so far, one including many new planet types and one making all limits 10x as big as normal. The 10x mod isn't that big but the New Planet Types is, and to install the mod multiple times on the same computer makes it use up about 3 times more space then it should. (As there are 3 users here playing this game.)

Now my question is simple. Is there a way to install a mod only 1 time with allowing all users to active it for themselves?

The game is installed on the F: drive, the mods are installed on the overloaded C: drive making the computer slower. There is very little room left on the C drive and installing all mods 3 times will most likely kill it. (although I don't really know and might be exaggerating a bit...)

So is there any easy way to optimize a bit? If so please tell me how it would be really usefull.