Need MD5 pgm for Windows 7

Could you recommend a program that generates MD5 signatures for files on Windows (7) PC. Would you share the link to it.

Thank You

EDIT: I would like to compare 2 Arduino zip files every no and then to see if they are the same etc. So for example: copy file path of 1st file paste it to MD5 pgm copy 2nd and paste, o/p will say files = or not =

Maybe http://www.pc-tools.net/win32/md5sums/