I want to use a soft phone on my laptop but I don't know how to have one?

Do I need to download a software application online?

Is Ethernet network card the same as Ethernet adapter?

If no, how did they became different and what are the examples?

Can someone site some differences and the importance between the three available standards of 100Base-T namely, 100BASE-TX, 100BASE-T4, and 100BASE-T2). 

Is it possible if I'm going to use a Cisco voip phone and connect it to a NEC (voip capable) Pabx?

I can’t use the internet on my LG Optimus phone.

Whenever I go to the browser and choose a particular site on my bookmarks,it will load first then it will restart the phone.

Is that a sign that I have a virus on my phone?

What are the advantages and disadvantages of a Power over Ethernet or a POE switch?

Up to how many stacking does a normal 24-port switch and a normal 48-port switch can accommodate on a network?

I am running Windows 7 64-bit and GNS3 0.8.2 Beta 2. I can be able to list the network devices from my GNS3 but the problem is I was unable to add cloud in interconnecting PC's. The error says "The "Generic Ethernet NIO" list is empty.

I am using an Admin account and run as administrator. And then I performed a compatibility testing. I also tried to disable the Firewall and UAC.

I tried to reformat my computer but I got the same error. Help please.

I am using a LG Cookie phone and I saw that there is email account on it.

I want to know how to set-up the email on my phone.

I want to know how to make a network cable?

If you can tell me the whole process of it and how many hours it will take me to do it?