(Answering my own question for the future / others).
I have a process I'd like to kill by name (in my case from an InnoSetup from Pascal script). My issue is that my process is called MyVeryLongProcessName.exe and I don't have access to taskkill (just tskill).
On Windows XP (embedded) in this case, I tried with the following result:
c:\> tskill MyVeryLongProcessName
Could not find process: MyVeryLongProcessName
But if I renamed the process (and tried to kill it) it worked fine:
c:\> tskill MyShortProcess
My question is / was: how do I kill process with a long process name using tskill?