Sanjay, nothing except the (non-free) Adobe Acrobat will work for the statement emailing functionality available in GP 2010 that Ron is asking about.
Ron, according to the GP 2010 system requirements (mbs.microsoft.com/.../MDGP2010_System_Requirements) Adobe Acrobat 8.0 and 9.0 are "supported". That means those are the only versions that have been fully tested by Microsoft. I personally have also used Adobe Acrobat X with GP 2010 with no issues. Just starting to test Acrobat XI - looks fine so far, but I have not tried everything in GP with it yet.