Microsoft's File Checksum Integrity Verifier utility example
------------------------------------------------------------

[this utility can be found on http://support.microsoft.com/kb/841290]

open a command prompt
go to the directory in which the four executables are stored

to compute the MD5 and SHA-1 hash values of all executables in the current directory

    fciv -add .\ -type *.exe -both

this should give as output

    //
    // File Checksum Integrity Verifier version 2.05.
    //
                    MD5                             SHA-1
    -------------------------------------------------------------------------
    e5f0fc6d3586c4dd15970d5be7b0b9c7 84ca79dea0a5080636c87cf68358c89cfc3d1433 .\HelloWorld.exe
    6503bdf2adce98b500219640e6cf99ca 5ad5c5349db7e923536610e828b5edb79c5c7fa0 .\GoodbyeWorld.exe
    18fcc4334f44fed60718e7dacd82dddf 0033f995a30fd2ccbf60cc1e7d7db9e649397668 .\HelloWorld-colliding.exe
    18fcc4334f44fed60718e7dacd82dddf 30ace7e13a7f9dc9abbaa431241309ac6741e735 .\GoodbyeWorld-colliding.exe

(the order in the output table was alphabetical, and has been changed by hand)