hello Talisman.
In the charts posted by you, if you observe, there is no option to change the moving average option for Bollinger Bands. you can change it from 20, 2 to any other no.s like 9,2 , 9, 1.9, 50, 3 etc., but not ema to sma. that is default setting in icharts. if you have any doubt, please check the charts only with bollinger bands, in charts page ( not j charts), the ema also will be displayed.
for posting charts, use imageshack or tiny pic.
yes, it can be done the way you have done. But, better option would be to save the chart in you computer, and upload it. please follow the instructions provided in this thread.
http://www.traderji.com/announcements/22138-how-post-chart-image-traderji-com.html