The difference between (1) and (2) is the position of still. Are (1) and (2) no problem, the same message?
(1)The magic number of seats needed in parliament to secure a majority is 126. This means that, mathematically, the Radicals together with the Socialists and Mr Kostunica could still form a government with a tiny majority.

(2) The magic number of seats needed in parliament to secure a majority is 126. Still, this means that, mathematically, the Radicals together with the Socialists and Mr Kostunica could form a government with a tiny majority.

Question

The difference between (1) and (2) is the position of still.  Are (1) and (2) no problem, the same message?  
(1)The magic number of seats needed in parliament to secure a majority is 126. This means that, mathematically, the Radicals together with the Socialists and Mr Kostunica could still form a government with a tiny majority. 

(2) The magic number of seats needed in parliament to secure a majority is 126. Still, this means that, mathematically, the Radicals together with the Socialists and Mr Kostunica could form a government with a tiny majority.

Answer

Still is a connector between sentences and its aim is to emphazise the effect of something
 (cause-effect).  Generally, we should place connectors at the begining of a sentence followed
 by a comma.  The second one is better written.

Answer

I have no clue about that. All i know is that the parliament has become the place where aspiring politicians are training their boring rhetoric instead of agreeing or arguing briefly on evident issues.