Custom test results information

Hi,

          Could you please let me know, how to imports the custom results to teamcity server. I have read the Teamcity help file, we can imports the custom test results using  1. service message  2. Teamcitymain-info.config file. But, i have no idea how to send the custom test results using the above one. Currently i am using the Msbuild as a build runner and it invokes my testframework and exports the test results to an xml file. Now i have to import the xmlfile to teamcity server.

Could you please let me know, how to imports the testresults to teamcity.