just wanted to add a comment here as well, may be off topic or may not.

i had created a script with the help of the community that gathers md5's (which gathering md5's is obviously NOT what your wanting to do, i am just using this as an example) of each file in a specified directory or single files. i then used a tool to pack the script into an executable file and then put that into the system32 folder. then i simply open cmd in the current explorer directory and type the packed exe name and directory or file's name i want to get md5's of and viola. works great though i do not think this is what you were after, it /could/ help some future readers in certain cases.