VANS

Right i know this might be off topic a bit i dont know because i only read the first page but i want to install the classic command and conquer 1 onto XP ive just found it in my loft fully boxed with everything in it even registration card after like 9-10 years well i want to install it but i have no idea how to wen i go to install it i av to explore the CD and then click the .exe but it says not enough disk space or please install outside of windows (which i have no idea what that means) if some one can please help me that would be great ive got all the other C&C's and got rather bored of them thanks VANS aka nick