I want to start 3 instances of tcmd, each with 6 tabbed console windows running various things. I'm starting this from a cmd window. I have it working from a batch file like this: start /B cmd /C "C:\Program Files\JPSoft\TCMD19_x64\tcmd.exe" /C %1 %2 %3 %4 %5 %6 %7 %8 %9 the arguments are a batch file + params that starts 6 command programs I run with /tab and they open as expected. this almost works right - but the second time I run it with different parameters I want it to start in a new tcmd instance, what it does is add tabs to the current instance. I looked at the help and did some experiments, but no luck! I'm probably missing something obvious.