Is it possible to change the icon of a MS-DOS bat file?

There are tehnically two options here that change the icon of the source file, but you would either need to wrap the batch file with an SFX archive, or use Bat To Exe Converter. I personally use Bat To Exe Converter, because it allows you to set things like the icon, as well as version information and even personal favorites such as invisible launch and obfuscation. You can also use either Resource Hacker or Resource Editor to add things that Bat To Exe Converter can't add during the building process. You can also use Resource Hacker on some projects to make changes after building in case you lose the source batch. The resource containing the script is usually under RCData-> B. Hope this helps...