Trailing stop on brokers server

Hi,
Does any one know of an MT4 broker who has the Trailing stop function attached to the brokers server instead of the traders computer.

none, it is how metatrader has been programmed to work. No way around it.

Where can I learn more about how the trailing stops work.
Does it differ between brokers?

If I set 50 Pip SL, does it start taking effect only after the trade moves 50 pips in my favor.

Also is it 50 pips from the highest value reached so far?

thanks
TradeStar