Ok, thank you. To be honest, the only thing I need is that window code HWND, and since it's variable, it's only TC who knows it or the existing terminal addon that was linked to earlier.
If only I could get that HWND internally from TC I could launch ConEmu from within TC and it would work just fine — no need to worry about hacks or anything, everything has already been hacked

, ConEmu has a module that allows it to be embedded into any window with big enough area.
Unfortunately command line is too small, I've only managed to inject ConEmu into the tab-area of regular panels or tree-view. But it's only possible after I've established the dynamic HWND of those windows, and it's a manual process

Anyway, I've also asked the author of the terminal addon (
http://totalcmd.net/plugring/tconsole.html), maybe he would be kind enough to add an option to launch ConEmu (it's just one line with HWND passed to it) in the additional window he already creates instead of the default cmd/PS.