Need Help on Installing Ear/Mic cables to Motherboard...

First of all, I have the P5W DH Deluxe board and a Thermaltake Soprano case. The case has an ear/mic cable which runs from the top of the case down to the motherboard, etc. I know where I need to plug the connectors in on the motherboard in order to make it work, however, I cannot figure out the proper configuration of the 6-pins for the connector. The Asus “conversion” guide supplied by Thermaltake does not 100% match the layout the motherboard user guide gives me. This is what the motherboard gives me in terms of pinconnections:

For HD Audio:
SENSE2_RETUR
SENSE1_RETUR
PRESENCE#
GND
PORT2 L
SENSE_SEND
PORT2 R
PORT1 R
PORT1 L

For Legacy AC 97:
NC
NC
NC
AGND
Line out_L
NC
Line out_R
MIC2_R
MIC2_L

The pins coming from the jacks in the case are the following:

EAR R
Return R
EAR L
Return L
MIC IN
MIC VCC
Ground

And according the the conersion guide the following should work:

EAR R should go with LINE_OUT R
EAR L should go with LINE_OUT L
Ground with Ground

What about the other 4 pins? The guide does not give a direct translation of those.

Can anyone help me? I would greatly appreciate it!

What I understands with this is

EAR R - line out R
Return R - Line in R
EAR L - Line out L
Return L - Line in L
MIC IN - both Mic_Right and Mic_Left
MIC VCC - There should be something like VCC port in your sound coz this provide power to the Mic. (VCC - common-collector voltage)
Ground - Ground