Wiring up a Electret Microphone to a 3.5mm cord for PC?

My headset's microphone isnt really too good, its wayy too quiet with boost and volume all the way up so I'd like to make a custom mic to hopefully have it perform better then my current mic

So I was looking around and saw these ones that come amplified https://www.sparkfun.com/products/9964 https://www.sparkfun.com/products/9868 Those look like they can be easier to solder together than this one https://www.sparkfun.com/products/8635 

Would I be ok to splice up a headphone cord and solder everything up or will i need external power for them or anything else to have it run alright?

Problem is the cord on the headset is likely using enameled wires. So it's vary this stranded wire where each strand has an enamel coating on it. The enamel coating is vary hard to remove and the wires are so thin a 20W soldering iron can melt the wires.

But those mics are going to be no better than what is on the headset. If you want a better mic you will need to buy a better mic and possibly a pre amp for it and can be connected to the line in on the back of your PC.