Microsoft SQL Server 2008 Developer Edition

no key needed
works on both 32 and 64 bit (and ia64)
minimum OS: Win XP or Windows Server 2003 SP2

required specs

(32 bit)

Pentium III-compatible or faster processor/1.0GHz. Recommended: 2.0GHz or faster
RAM: 512MB Minimum, 2.048GB or more recommended, OS maximum

(64-bit)

Minimum: AMD Opteron, Athlon 64, Intel Xeon with EM64T support, Pentium IV with EM64T support, 1.4GHz
Recommended: 2.0GHz or faster
RAM: 512MB Minimum, 2.048GB or more recommended, OS maximum used for DB engine, 4GB for Reporting Services.

Code :- RapidShare - 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27

1- unzip the files
2- mount the .iso
3- install
4- launch (cant believe I'm so good at explaining this )