copy Files in "StartUp" to :
C:\Program Files\Autodesk\3ds Max 2008\Scripts\Startup

copy Files in "Icons" to :
C:\Documents and Settings\ <you rUser Name> \Local Settings\Application Data\Autodesk\3dsmax\2008 - 32bit\enu\UI\usericons

copy Files in "Macros" to :
C:\Documents and Settings\<you rUser Name>\Local Settings\Application Data\Autodesk\3dsmax\2008 - 32bit\enu\scripts\startup