modifying time compression?

[Kesserendrel]

Finally bought a new computer and with it SHIV Gold Edition. I want to make some changes I made in SHIII, chiefly making the max time compression higher. I don't see a main.cfg file in the root directory like I remember there being in SHIII. How do I make this change? I suspect the other (deck gun) change I want to make will be in the same file.

Thanks.