@Qualmi
These font files don’t replace all fonts.
You should use a very different font to see the effect and where the fonts are replaced.
@NiteMare
Welcome to the forums.
Have fun and enjoy your stay.
At least you should have the latest version of GTKRadiant (version 1.4.0 preferred but 1.5.0 also working).
The newest version of q3map2 if you use GTKRadiant version 1.4.0 (it’s shiped with version 1.5.0 of GTKRadiant).
Easygen and the W:ET template for Easygen.
Some prefer to build the terrain by hand without Easygen.
There a tutorial written by sock on how to alpha blend terrain.
Seems that the original article on sock’s homepage is gone 
For the biginning building terrain with Easygen is sufficient / adivsed.
Ifurita has written a very good scripting tutorial.
You will find it and some more tutorials and prefabs in the W:ET section of his homepage:
RTCW & ET 4 newbies
BTW it’s s.Oliver from wf 