can anyone tell mi how to upgrade my vb program withoout changing the entire program?

[happyger]

hi,
i'm currently writing a program in vb. im new to this program and need some help. if i have a program that can run. then a few months later, i need to do some update in my program, but i don't want to change my entire program. i only want to do some add on to the old program through A drive. how doo i write the program??? i need the solution urgently!!!! pls help mi!!!
thanx!!!!
p/s: if u dont really understand my que, feel free to email mi again.

[CthulhuDragon]

There is a program called patch maker by ClickTeam that will do something like this. It will compare the new exe to a previous exe and create a small exe file complete with installer that will modify the original program. This is shareware, but it is a really nice program. Works great.
Click Team Homepage