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). 

I am using Mac OS X 10.5.8 with Firefox and Google Chrome browser. Firefox suddenly stopped functioning correctly and crashed for few times after opening it. Google Chrome is working just fine but sometimes it shows a blue page and telling me that something went wrong but sometimes it shows a page like the one I posted below. Can someone please explain why I am encountering this issue? Thank you.

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

I wanted to know all the shortcuts of MS Word. But if you know some of the shortcuts then it is ok too.

As I am new to MS Word, I was looking to know all the shortcuts so that I can complete my works as soon as possible.

I just want to know how to configure my yahoo, gmail or hotmail email account on my Sony Ericsson Mini-Pro?

I always see a file named svchost.dll functioning in the background under task manager but I don't know the function of the file.

Do you guys have any idea about the file?

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?

I am using a desktop which is of IBM but I am not able to find cwbtfutl.dl under the program files menu. Do you have any

idea how to restore the file?