Sorry jutetrea.
RanDom & SemiRandom are not as user friendly when it comes to paths as the Province Editor is.
Here is a stock answer that should help:
Getting all of the pieces in place can be a small challenge.

On my system, Dom3 is installed on my C: drive in a folder called "Games".
When you unzip RanDom, it should have the directory structure intact so that you can just paste the contents into your dominions3 directory.
Below is a bare bones map of the directory structure that you want to end up with.
Code:
c:\Games\dominions3
RanDom.exe
\RanDomSettings
BluewaterBay.stg
COT_colorscheme.stg
Default.stg
etc...
\SemiRandom
SemiRandom.cfg
SemiRandom.exe
SemiRandom.yab
\GAN_BIN
\GOD_BIN
\LIST_CRATE
\NAME_VAULT