Since you have asked for a step by step guide. I will give you a step by step guide.
This is a work in progress so bear with me for the while.
Instructions might not be to the point because everyone's setup and configurations are different. But these will be fine, I guess.
1)
I'm assuming that you have purchased a Wifi router. Linksys E1000 as mentioned by 'noob'....here's how this Wifi router looks from behind.
*i.imgur.com/8BfPx.jpg (you can't see any antenna in this router because it has a built-in 'integrated' antenna)
The other four Ethernet ports on the right can be used by you if you want to connect your computer again by using an Ethernet cable.
So, it will be like this. Cable from your ISP goes into the "Internet" port on your router. A cable from the router goes into the Ethernet port of your computer.
Since you will be using your router to *dial* to PPPoE (I will explain this in the next step), you will NOT require that PPPoE connection in your PC which you have created in my network places. Everything will be done from the router's side.
You will just switch on the router. The router will dial and connect to the Internet. The Internet will get shared to all the devices connected to the router - whether through Ethernet or Wifi. (Wifi is explained later)
2)
To make your Ethernet port on the computer to connect automatically to your router's LAN, here's what you will need to do.
*i.imgur.com/zZxA9.jpg <--- Right click here.....Properties....Internet Protocol properties and make it obtain the IP address automatically.
Note: This is for your Ethernet/LAN card. Not for your *dial-up* connection which you posted.
example:
*i.imgur.com/LWwOg.jpg
Note: If you have some settings saved, please take a screenshot and save them. So that in case you mess up configuring, at least you can revert to what you had earlier.
4)
Now it is time to configure your router. Connect the Ethernet cable from your ISP to the router's "Internet" port and connect the computer to the router with another Ethernet cable to one of the Ethernet ports at the back of your router.
Your router and your computer will be on the same LAN - local area network. Now you will be able to access your router through the browser and configure it.
*192.168.1.1/ <--- this is the usual configuration page. Open it. It will ask for a username or password. Username should be "admin" and password could be either of "admin" and "password". This is the username and password for your router's configuration portal/page.
After opening your router page. You'll be greeted with something like this: (may be different too...but it's your job to figure out in this case)
*i.imgur.com/FRp7w.jpg
Here you will have to enter the PPPoE username and password which you use to connect. And then save changes.
You will also have to clone the MAC of your LAN card and save in the router.
Here's how you will figure out the MAC address of your Ethernet adapter by opening Command Prompt.
*i.imgur.com/saVC1.jpg
Next you will find the "Clone MAC address" option in your Wifi router and configure it by entering the MAC address which you figured out above.
*i.imgur.com/4KhRI.png (Enter that MAC address here)
SAVE CHANGES.
5)
After saving the changes your router will reboot. Give it a while.
As your router will reboot, you will notice that your Ethernet card in your computer disconnected when the router turned itself off, and then it connected when the router turned itself on.
Wait for 3-4 minutes.
If everything has gone right, you should be able to browse the Internet safe and sound.
6)
Now it is the turn of setting up Wifi.
Choose your Wifi network's name and a WPA2 password to access your network.
*i.imgur.com/qjqmf.jpg
SAVE CHANGES.
7)
Here's how you will connect your Android phone to your home's Wifi network for the first time.
In my case, the Wifi network's name is gagan.
*i.imgur.com/3HKfR.jpg
Then you will enter the Wifi password. Then click Connect. Your Android device will save it. You won't have to do it everytime as your Android device will connect automatically.
*i.imgur.com/bhsXP.jpg
Your *smart TV* which has built-in Wifi should also have similar instructions.
8)
Now, if you want your computer/PC to connect to Wifi.....you should purchase a Wifi USB dongle.
It will look like this and it will connect to your computer's USB port.....just like a pen drive.
You _will_ have to install drivers to use it. Drivers will be supplied to you with the USB Wifi dongle.
Note: Unplug the Ethernet cable in your computer. Using Ethernet and Wifi to connect the same machine to the same network will create conflicts.
*i.imgur.com/y50XS.jpg
Here's how you will connect to your Wifi network in Windows. (after installing drivers for the dongle and all that

)
*i.imgur.com/qvqas.png