If the Flex front-end and the Web Services are on the same domain it should work normally ...
What error are you getting? How do you call the Web Service ? Have you managed to do it with normal Web Services?
And make sure you have right settings in crossdomain.xml file.
Do all you mean that i dont have to programmatically attached certificate if i installed the client ceritificate?
It should work without any programming change?
i use the similar way to call the web service
For a normal web service, the flex code return "SOAP response cannot be decode..". Actually i checked the log of web service. It can be sucessfully called.
For SSL-enable web service, the flex code return "sucess" with status_cde = 200 in the result handler. Actually i checked the log of web service, no call is maded...Further checked with the IIS log, the IIS log shows it return 200.....