Microphone for pc headset

[Florin22xxl]

So i recently bought a pair of beyerdynamic 770 pro without a mic. and i went ahead and purchased a clip on lavalier mic audio-technica atr 3350. Now the problem is i do a lot of skype talking,and the microphone pics on everything around the room: the noise my pc is making,the sound of my chery blue swiches(wich aparently is annoying for others :d) etc. Is there some way to set up this mic that it doesnt pic up on everything except my voice?
I can return this and maybe look for other. Are there any mics out there under 50 euros with noise cancelation?i only care about clean voice sound that the orher persons can hear,not every noise my room makes.
Tks

 

[unrlmth]

If you are good with modding stuff you could add in a boom mic to your headphones.

Something like this on the easy end of the spectrum:

http://www.head-fi.org/t/312405/dt7...or-less-than-10-can-work-for-other-headphones

Or if you are feeling more adventurous, you can have a more finished build:

https://plus.google.com/photos/105260319829322659756/albums?banner=pwa