Test Scenario:
Test scenario is like laying out plans for testing the 
product, environmental condition, number of team members 
required, making test plans, making test cases and what all 
features are to be tested for the product. Test scenario is 
very much dependent on the product to be tested.
Test scenario is made before the actual testing starts.

Test Case:
Test case is a document which provides the steps to be 
executed which has been planned earlier. It also depends on 
the type of product to be tested. Number of test cases is 
not fixed for any product.

test scenario is nothing but "what to test"
test case is "how to test"


scenario -check the functionality of  "ADD" button
test case-how you r going to test it like valid,invalid 
input etc

Test case is a description of what is to be tested. 
What data to be used and what actions to be done to check 
the actual result against the expected result.
	A test case is simply a test with formal steps and 
instructions.
Test scenario is combination of test cases or group of 
testcases

Test Scenario is the high level Req..
Suppose U take Baking Account Appl
in that we are preparing Secnarios like 
individual Account (in one Scenario)in that we have Req
name ,date of birth,adds ,identification prof,...etc 
        testcases for reguirements..
Joint Account (is one Secnario)in that we have below Req..
name, joinee name ,ADD, IDNT,,,ETC

here based on the secnario we are going to prepare  No of 
testcases.....

If Am wrong clear me ...