.exe game client

Hi I have a mmorpg game server and I would like a few customisations doing to the game client. 1. the files were archived and made into a .exe file using 7zip I would like it to be downloaded and formated into a .exe file using a other program or softwae to make it look more professionaly made. 2 If possible to reduce security I would like the .exe to be self signed if possible (optional) 3 also the game file once installed had a launcher and patcher, I would like if possible the patcher to be added to desktop icons once downloaded and installed by the user. thank you for the time reading this project