Hi all you AoE fans !
Here is a mod pack for Age of Empires that allows you to use snow in your scenarios.
To install simply:
1) unzip all files in SnowMod.zip to your Age of Empires directory
2) doubleclick on the file named AoEsnow Install.bat
   it will back-up your existing drs files and then install the Snowmod     pack 
3) to restore the original drs files just doubleclick on the file named     AoEmodin.bat and it will restore the drs files from the backup
                        
Things changed:
1) Gaia "grass clumps" 1-5 are now snow patches which can be overlapped     to achieve a rather nice snow effect 
2) Most but not all Gaia pine trees are now snow covered
3) Now when you "paint" a pine forest in the terrain editor you get a       nice snow covered pine forest with just enough green left in

Tips:
   In order to get a really good looking snow forest it is best to lay    out all the pine forests first then go back and cover the forest with    snow patches. It won't delete the trees but will lay snow on the     ground underneath. If you try to put trees on top of the snow then the   tree tile will also lay down a patch of grass defeating the effect.

Thanks to Stoyen Ratchev for his DRSbuild utility and to Joseph Knight for his SLP studio ver 1.7. Great utilities guys !

Note: This mod-pack only works with Age of Empires. 