Is there a way on how I can change my desktop background on windows 7 starter?

How will I know if my virus scanner is really working?

Can anyone tell me how can I play videos with mkv format. I've tried playing it in WMP, but it does not work. It says that the codec is not supported.

Guys

Please help me find solutions to speed up my internet connection.

As of this time i am  experiencing slowness in my internet connection.

Hope you can help me solve my problem.

Thanks.

Google provides backlink  tool. And how does this thing work?

Do you need to pay anything for it to get this tool?  

How does Google handle backlinks and does it has anything to do to make one site more exposure?

I would like to know more of it?

Please help me!

My webcam and microphone is not working with Windows Live Messenger. My contacts cannot see and hear me on their end while on a video conversation.

I’m using a Windows XP computer and running on high-speed internet connection. I have tried using my devices on another computer and it worked perfectly.

I cannot browse the Internet through my Firefox. I have my Yahoo Messenger and Limewire. Both are working properly. I tried optimizing, resetting and restarting the browser but it's still the same. I’m using Firefox Version 3.6.16.

Hi Guyz!

Please help me with my problem on my Live Messenger.  

As I have confirmed with my online friends, they can't find me on the live messenger,

I am always appearing offline though I am online and set my status as available.  

Kindly help me find a solution on this.

I've been searching all files on my drive C, however I could not locate the directory where I can find those videos which I have viewed particularly videos from you tube.I want to use this video  for my  presentation in school,but I don't know how to save it. I was told that it is being saved by your computer in a specific folder, but I've searched it in the drive c,   however i really could not locate it. Can anyone help me with this one? I really need that video so badly.

Hi,