Heres what it says in english (i used the translator on Google)
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The new buildings in Ventura (by UniversoGTA)
09-06-2007
http://www.universogta.com
1. Paste the folder "data" in C: Program Files Rockstar Games GTA San Andreas or add constru.ipl in the file "data maps".
2. Open the file gta.dat (in C: Program Files Rockstar Games GTA San Andreas data) and adds the following line:
IPL DATA MAPS country countryW.IPL
This one:
IPL DATA MAPS constru.IPL
* Remember to back segridad of all those files that you'll change
** If you want to upload this mod to a page to leave intact the original file readme.txt