Interesting stuff... Looks like I'll have to cook my own code (yikes) last time I was in the kitchen I got burnt!! and there was no feast that night.
I cant seem to find any pre-made programs to concatenate *.exe files. errrrr well one that will perform a Horizontal Concatenation of files but I think that is only half of what I need.
I guess I could just mess around and figure it out for myself (thanks).

Souleman I dont think you get it yet (no offence)I am not a cracker I am a hacker I love to figure things out. If you want to catch a a crooked mechanic learn how to fix cars. I would be interested in hidding investigative software on a suspect local pc to compliment network monitoring. To accomplish this I think you would need to hide the proccess and activities behind a running app so the suspect does not notice it under the task manager and figure it out to soon.

Anyways thanks for the scraps of info it was enough to point me in the direction I wanted to go
Ive seen that one could (like a virus) append an exe, change the header accordingly thus adding extra code to an *.exe but im a novice programer and time is not on my side unfortunatly.

Cheers!!