Go here to download:
Download here ILMerge, http: //www.microsoft.com/en-us/download/details.aspx id = 17630?
Here to download ILMerge-GUI, http: //ilmergegui.codeplex.com/
These two parts are required, the first one is the command line, not used. The second is the first large GUI package, the first tool easy to use more!
ILmerge-GUI is used to a series of exe, dll files are loaded into a packed file exe. very useful!