How to graph my forex account return / risk vs. an index?

[ahimsatrader]

Do you know of any sites / tools that'd let me:

 

* Graph the weekly return of an index (let's say the S&P 500) vs. my weekly forex account return?

* Graph the weekly % fluctuation of an index vs. my weekly forex account % fluctuation?

It can be done through MT or whatever, but I want the charts as saveable image files (JPGs, PNGs or GIFs).

Is this something I'd have to get custom programmed?

Thanks for your insights!