Download it here

http://blog.est.im/wp-content/uploads/2010/03/lua.zip

  File: lua51.dll
  Size: 211,968 Bytes
CRC-32: 858118be
   MD4: 58ae2a71a8280937aa6b92191a92a856
   MD5: 3817295d48787592c5be41559634b23d
 SHA-1: adc8198d53788d6970da27ef2b524b1d8b7b12e8

  File: luajit.exe
  Size: 13,312 Bytes
CRC-32: fbdb635b
   MD4: 4b9f58287d582a18858c1cf70fffd1b0
   MD5: b1817ac031fcc0375e3554ce9db3a6b5
 SHA-1: e81c09cd933eb48f65793577b2010ad1924cb1d0

Microsoft Visual Studio .NET C++ Express is a PITA to install, I used a ripped version of VC2008 commandline compilation tools.