Dynamics NAV 2009 RTC vs Bing

FMDG

Hi
We designed an integration between Dynamics NAV 2009 RTC and Bing.
We designed and created the WebServices to support Bing inside Page part; that means we are using Add-in, and what we want is to have a Role Center with some Bing maps, with specific width and length, and for another pages we want different scale of width and length.

Dynamics NAV 2009 project with bing for Logistics and Transportation

First one: we create a file to dynamically support width and length; but we detected that we allways have a break, anytime we define width > 800 and length > 600; is this a restriction of Bing or is something that we did not created or defined yet? For instance, we need small regions for maps in Role Center part, but in other places we want to open a typical card page with some information and a "big" area for bing map ... in fact, for Portugal we need a rectangule and we want length completly different as we have now, which length is much more bigger then width, as exemple for our country.Other thing is this, how to open Europe, visible for pins we needed, if we have such a small map like 800x600?
Sencond one: anytime we include Bing map (as Part) in Role Center page, and open the part and after try close again, the system block the closing process, and the blank area of the maps, which appear anytime we open the width for that page part, it seams that does not work well; if we use this open/close in a typical factbox/part on a non Role Center, for instance in a Page List, it works fine.