[Minosmal]

I found the thread by Mad Lust Envy and have been narrowing down what pair of gaming headphones i want, but i had some questions.
 
 
First, I see there's high praise for Dolby Headphone Virtual Sound; My questions are: do i need to download it? do i need to get a certain sound card? or do i just buy a pair of headphones that uses the technology? 
 
Second, I'll be using these headphones for a mix of pc games, and music, but mostly games. Here's what im looking at so far, any feedback would be appreciated. It should be noted i'll be using these at home, and dont need to worry about disturbing anyone, im just looking for a good pair of fullsize headphones for gaming. I also am using my on-board sound card from the computer i built this year, i'd rather not buy a sound card, but if it's a must, i would definitely appreciate any recommendations.
 
Here's what i'm looking at:
 
[size=1.7em] Sennheiser PC 360 Headset for Pro Gaming[/size]
[size=1.7em]  [/size]

[size=1.7em] Sennheiser PC 350 Collapsible Gaming Headset with Vol Control & Microphone Mute[/size]

 
Razer Megalodon 7.1 Surround Sound USB Gaming Headset
 
Creative Aurvana Live! Headphones
 
BTW: My budget is around 200 bucks.

 

[thrillhaus]

Get an ASUS Xonar DG. They can be had for $20-30.
 
For headphones. None of those, especially none from Razer or those other mousepad companies. Consider one of the headphones mentioned in the Mad Lust Envy thread and attach a boom mic or clip on mic.