Hi People,
I am planning to do my specilization in Strategy from the US in the year of 2015. Below is my profile so far:

Under-graduation : BE-Computer Science
Post-Graduation : Post graduate programme in General Management from ISB, Hyderbad (executive MBA)
Consulting experience from E&Y: 4 years
Entrepreneurship : Have a start up with 4 serving clients.

I want to do a specilization in Strategy & Implementation. What are the changes of me getting to top B-Schools in US and what average GMAT I would need.?

Thanks for your help!

I don't think there are any top schools in the US with a specialisation in strategy and implementation.

No, I can't find any really notable schools with a focus on implementation. Maybe try
http://www.find-mba.com/specializations/38/strategy-business-development
http://www.find-mba.com/specializations/23/operations-management

Thank you!