Install with modloader: Drag folder of the mod in modloader folder
Without modloader: Import files into your gta3.img using an image editor(ALCI's IMG Editor, SPARK, etc.).
- For easier removal import files into custom.img instead of gta3.img. Custom.img is located in the "SAMP" folder in your GTA directory.

Idlewood Environmental Map Files:
glenpark1x_lae.txd
idlewood46_lae.txd
laeidleproj02.dff
laeidlewood02.dff
laelasjmscubit.dff
laelasruff201.dff

Credits: Travie, Mandatory, WSMOBPiRU
https://forum.ls-rp.io/viewtopic.php?f=1579&t=684463