Hmmm... Okay, as I view what I think you're asking is a very unsecure operation.

1. Allow a remote computer to run something from my system
  (I would need to share my folder and give permissions)
2. Assuming I want to initiate the install would mean
  (The remote execution would need to run a remote execution against MY system which would mean it would need ADMIN rights on MY system.)
 
NOT a good thing. In theory alone I think it could be done, but I would not do it myself except maybe as an experiment to prove or disprove that it could be done.

A. What is the bottom line here?
B. What do you want to happen in detail?
C. Do you want to install some software on the remote computer?
D. What OS is the remote computer?
E. How many computers do you want to run this against?
F. What version of KiXtart are you using?

Please answer ALL of these questions in order for us to better assist you. Quit being cheap with your words if you really want help. No one here has magical mind reading powers. As CO said, we're quite willing to assist you, but not if you won't work with us better

RemoteExec UDF might be a good place to start
http://www.kixtart.org/ubbthreads/showflat.php?Cat=0&Number=83206

But again, we're back to GUESSING what you're really wanting to achieve here.