How can I select files in Midnight Commander on a MacBook Pro? I find really annoying to use Midnight Commander under OS X when using the non-extended keyboard (laptop).

I found no way of simulating an INSERT key press (select file) and I would like to find a solution that does not require me to reconfigure MC, specially because I cannot do this with each machine I'm connecting to from my MacBook.

I will give extra bonus ;) for and extended solution what will solve the problem not only for the INSERT (select file) but also for switch selection and add/substract selection (NumMultiply,NumMinus,NumPlus). 

Remember that Numlock area *, + and - are not the same as the ones from the standard keyboard.
Ctrl-T is standard hotkey for file selection — http://linux.die.net/man/1/mc.

As for switch/add/substract, just type shift-8 for *, shift-= for + and - for minus. 

All this works in MC out of the box.