loneninja :
I can tell you first hand all the CnC games in the first decade pack, and C&C 3 Tiberium wars work just fine in a 64bit OS, so does every other game I own all the way back to starcraft. There's a few games released through EA that fail to create the options.ini file, but its easy to create yourself.
OP, if your in windows it should list if your on 32 or 64bit under system information found within the control panel.
well i don't buy tiberium wars, i have a compress installation and i tried it in vista sp2 64 bit it did not work. but then i install win 7 32 bit and it worked fine...
i also can tell u fast hand that,
here it says in read me file, read then comment... bye the way it's kanes wrath....
System Requirements
==================================================================
Command & Conquer 3: Kane's Wrath requires DirectX 9.0c. You can
install DirectX 9.0c by following the onscreen prompts during the
game's installation process.
REQUIRED SYSTEM SPECIFICATIONS:
· OS: Windows XP, Windows Vista (32-bit; 64-bit versions of
Windows Vista are not supported)
· CPU (Single Core): Intel P4 2.0 GHz or AMD Athlon 2000+ for
Windows XP / Intel P4 2.2 GHz or AMD Athlon 2200+ for Windows
Vista