Which one would be best for me?

I am using Windows 7 Ultimate and I don't have any built-in wifi adapter.I want to create a wifi hotspot from my PC and
use it on my smartphone.To do that, I want to buy an USB Wifi
Adapter(Dongle).As I don't have any knowledge in hardware, I'm not sure which one is best in the market.Kindly suggest me some along with name and version.

My PC's full spec :

1. Intel Dual-Core E5700 (2 CPUs) 3.00 GHz
2. Intel DG41WV
3. 4 GB RAM

I doubt that your PC config or O/S has much to do with choosing the best WiFi. Most USB wi-fi’s will work with any system with USB. I’d look for speed, range, power, features, and what your budget allows. I like the Netgear a6200 – though you may not need that much horsepower if budget is an issue.

http://www.netgear.com/home/products/networking/wifi-adapters/

I’d try different manufacturers and compare their product’s range, features, and price. Then choose what best suits your needs.

Thank you for your reply, but I really don't have much knowledge in hardware companies,products and budget isn't any issue.

Just suggest me one(If you're in my situation which one would you buy)

SirDarknight said:

I am using Windows 7 Ultimate and I don't have any built-in wifi adapter.

If it's only an adapter you need and budget isn't an issue, then as in my prior post: I like the ease, function, and performance of my A6200.
http://www.amazon.com/Netgear-WiFi-USB-2-0-Adapter/dp/B008HO9D7M/ref=sr_1_1?ie=UTF8&qid=1387685069&sr=8-1&keywords=netgear+a6200

SirDarknight said:

I want to create a wifi hotspot from my PC and use it on my smartphone.To do that, I want to buy an USB Wifi Adapter(Dongle).

This sounds a bit different than your earlier sentence. If you don't already have access to a wifi signal, you'll need more than just an adapter; ie.: a router and internet service connection to create a brand new hotspot of your own.

SirDarknight said:

As I don't have any knowledge in hardware, I'm not sure which one is best in the market. Kindly suggest me some along with name and version.

I don't know what is best on market; as I think most are about the same for the average user. I like my A6200.

SirDarknight said:

My PC's full spec :
1. Intel Dual-Core E5700 (2 CPUs) 3.00 GHz
2. Intel DG41WV
3. 4 GB RAM

I looked up the DG41WV mobo you mention here; this board should be fine as it has 8 USB2 ports/headers for your adapter and the A6200 (or others) will work fine. Also I noticed only one socket on this board; I too often get mixed up between the number of cores and number of CPUs. Good luck with you system build! :)