how to use bayonet and remote triggers????!

[frankman]

hi
i searched google about a thousand times....
how the **** can i use tnt or mines with a remote trigger?
i dragged the trigger on the mine/tnt... tried every key...doesnt work
same problem with the bayonet! a bayonet is mounted on my g36 but the byonet button remains grey and i cant use it
last question:
i need to kill the doctor in cali cantinos for the medicine but if i do( even with knifekill or suppressed weapon) all army forces turn hostile too

i got the actuall unofficial patch installed and no mods.
would be very pleased if you could help me i like both brigade e5 and 7.62 very much^^