ok, i made application for Agrror and he is happy hehe
Here is, how it looks like B)
User can click on Check updates, when new updates exists, it will ask you, if you want to update.
Application on right side is for server. You can choose a folder, which will be synchronized with server and when It's done, updater knows about it. So, what you have in folder on HDD It's on server You can deselect folders, which you don't want to sync.
It's using MD5 for checking, if files are different
if anybody is interested, i will sell it for 9€ only i can modify it, as you want.
Just contact me via PM.