I love when Windows command line tools are actually useful and friendly. wmic is a rare one that fits the bill. I use the following command to uninstall programs silently (using Java as an example).
Find The Program Name
Run this command first to get the list of programs you can uninstall:
wmic product get name
Call The Uninstaller
Then, call the uninstaller in silent mode with this command:
wmic product where name="Java 7 Update 75" call uninstall /nointeractive
wmic product where name="Java 7 Update 75 (64-bit)" call uninstall /nointeractive
The name must match exactly and be kept in quotes. This can be run from Altiris to automatically uninstall programs.