@darkc0de a conversion script from mIRC to tcl would be a monster task as tcl has very few built in functions. It could be done but you would have to have nothing but time on your hands.
I have seen some routines for mIRC re-written in perl and php. If you look around you can find them. I have also heard about a full mSL interpreter written in php, but I've never seen it myself.
I'm pretty decent at converting them but it would have to be a script that would be used by a large number of people before I would consider it.