Hi elestirmen and welcome to Windows 7 Forums
Sorry, but that will not be possible. Have a look at this:
Quote: Originally Posted by Wikipedia
This three-conductor jack has two normally closed switches connected to the contacts themselves. This would be useful for a patch point, for instance, or for allowing another signal to feed the line until a plug is inserted. The switches open when a plug is inserted. A common use for this style of connector is a stereo headphone jack that shuts off the default output (speakers) when the connector is plugged in.
This is the sort of socket that you have on your laptop. When you plug a cable into that socket, be it for headphones, external speakers or feeding to an amplifier, the switches operate and the internal speakers are cut off. The same will apply for your microphone/line in socket in that your built-in microphone(s) will be cut off when that socket is in use.
Hope that explains things.
Taken from TRS connector - Wikipedia, the free encyclopedia