How To?? Update Your Program??

I have distributed a couple applications to a few of my friends, knowing in the future that I will revise them. How can I create an update for a previously create application? Supposed I just want to change a few things on the original, yet dont want the user to have to uninstall the orginal and install the new. Using VB.NET Pro 2002.

Thanks

Don't know how to apply just a "patch".
But if your app isn't too large, it can easily be re-installed with the new version.
Make your changes to the app, then change the version number in the installer file, which will prompt you to change the product code & something else, forget what. To see the version number, highlight the project in Solution Explorer, then go to properties. Just answer ok to the prompt.
For consistency's sake, change the version number in the assembly file as well.
Then just install as normal. The old app will be overwritten.

InstallShield DevStudio has an option for upgrading your app ;)