How to display cross currencies in MT4?

 
Hi All,

I'm looking for a technique of displaying a chart on MT4 that will behave just like any other chart, (will allow me to attach indicators to it and automatically update in realtime) but will not be on a currency pair that is provided by the broker.

For example, let's say that the broker provides the following pairs: EURUSD & GBPUSD but does not provide: EURGBP

I'd like to create a chart in MT4 that would display to me the EURGPB chart assuming that I fed it with the prices from both the EURUSD and GBPUSD pairs.

Any ideas on how to do this?

Thanks.

PS. This is just a hypothetical example, I know that most brokers provide the EURGBP pair, but I don't of a broker that provides PLNJPY, or other exotic pairs but they do provide currency pairs that could be used to generate such charts.
 
EURGBP = EURUSD/EURGBP
 
phy:
EURGBP = EURUSD/EURGBP

That bit I knew ... how to display a real time chart showing that?

 

In my case I would write a history file of the calculated bars, open an offline chart of it, and occasionally update the window.

Hints for all that are in "Period Converter Optimized"