If you downloaded a file named something like Adobe_Illustrator_CS8_1800_Final_64bit_hot.rar or .exe :
Integration that allowed users to sync fonts from the Adobe Typekit library for use in Illustrator. adobe illustrator cs8 1800 final 64 bit hot
: Windows 7 SP1 or Windows 8.1 (64-bit versions); Mac OS X v10.7, 10.8, or 10.9. : Intel Pentium 4 or AMD Athlon 64. : 2 GB minimum (8 GB recommended for 64-bit). : 2 GB of available space for installation. OpenGL 4.0 If you downloaded a file named something like
The true 64-bit version of Illustrator started with CS6 (version 16) and later CC versions. Illustrator 8 (circa 1998) was 16-bit/32-bit and designed for Windows 98/NT and Mac OS Classic. Mac OS X v10.7