This is really old post on BullCharts forum how to put Relative Performance(RP) indicator build in in BC but I tried to replicate it as it seems useful. I can not put in indicators for both securities. It keeps adding the RP indicator for the same (first) security; see below .

Did you come across something similar ? The BullCharts post & link to it is below.

Thank you Regards, Andrzej

The link to post is  http://www.bullcharts.com.au/forum/forum_posts.asp?TID=249&title=relative-percent-charts - The Relative Performace indicator may be what you're looking for. It allows you to set the starting date for calculations. So you might follow these steps:
1. Select the first security (as per normal)
2. Insert the second security (as per normal with Insert Security)
3. Optionally hide those two price plots
4. Insert the relative performance indicator for the first security
5. And again for the second security.
6. And set them to both have the same starting date, as required for your analysis.

Perfect Peter, I had the % sign in the Name of the file, not allowing the upload properly.

This is exactly what i was after, easily showing spreads and Relative strength comparisons, and even better now in the new version with the ease of adding Metastock data to the RSC.

cheers etrader