Due to the security sandbox you can't run other applications from Flex.
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There is no way to do this from the browser. There might be functionality like this someday in AIR, but not right now.
Flex SDK Developer
Adobe Systems Inc.
Well guys thanks for your response..
i got an api named MERAPI that do this work..it has code written in java..and acts as a bridge between java and air
now what i found here was that for executing the exe from flex it provides a function named systemExecute(array as parameter);
I tried to implement this but was stuck somewhere with java..then got a help from the google groups..
where the person saysin order to do this you have to run the bootstrap file..but how to do that