How can I get my WiFi connection protected and the characters not shown when SHOW CHARACTERS in the laptops are checked??

I have a WiFi connection here, in our house and I don't want any other person to know my password. I once entered the key to my sister's notebook and a day later I was surprised when a bunch of her friends stayed in our house enjoying the FREE WiFi connection.  I checked on her notebook and found out that when you put check on SHOW CHARACTERS, it really shows the password for my wireless connection. I want to hide the characters.

Help anyone?

I use Internet by broadband connection in my netbook and its operating system is Windows 7. Sometimes I find a problem in the connection. I can not connect with the Internet. It shows an error message. The message is:

Error 651:  The modem (or other connecting device) has reported an error.

If you continue to receive error messages, you can enable logging for analysis.

Why the problem occurs and how can I solve the problem?

I heard that we can use Blackberry Smart phones as a modem to connect to internet, but i have not yet have the chance to try it before. Now i travel much and thought there might be a chance that i forgot to bring my modem with me and have to use my phone as a modem to connect to internet.

I have tried to set the connection by following the instruction in the Blackberry Desktop software in my laptop. I have connected my Blackberry to my laptop using data cable and choose set as modem. I have inserted my internet provider details that is used in my Blackberry. I set the connection and tried to connect but the respond is that the PPP setting is not correct.

Where can I find the setting for the PPP? What is the correct setting?

I am new to Linux therefore I am not familiar with the errors and troubleshooting techniques. I want to configure my network using system – config – network but there seems to be an Exception Error.

I'm going to setup a wireless connection and i would like to be perfectly distributed, a boosted signal, extended wireless range and improved wireless speed and performance.

My questions is all about the following;

1. Wireless access point (WAP).  I would like to know all about access points.

2. Antennas.  A tested and accurate type of high-gain antenna

3. Do i need to upgrade my network adapter or should i prefer to use the built-in one.

4. Advantage of wireless repeater.

5. Setting up and modifying wireless channel.

6. Router configuration.  How to configure my router and where to find the router configuration page.

7. All about wireless interference.

Due to who we carry a notebook from home to office facing a problem of dynamic IP address at home and static IP address at the office. So is there any way to keep both setting configurations without  changing IP address each time  you change each location?

I am going to expand my network.

I have connected 5 PCs through a router.

I want to connect another 5 PCs but I don't have a switch.

I have DSL modem.

Is it possible that my DSL modem work as a switch?

There are lots of niche's nowadays but only few really gives you great amount of profit.

I want to know what are the best niches for you.

I'm talking about niche's that you can use to earn extra income monthly.

Hope many would response with their list of best money making niches.

Thanks.

I now know that SEO and back links are two of the most important things that we need to know in order to get decent traffic for your blog. Most of experienced bloggers also say that keyword is also a must. I don't have any idea about this. It's still not clear to me why keyword is important for your blog. Can someone enlighten me about  this? Thank you very much

I am using HP notebook and having trouble in connecting thorough my home PC network. I have wireless connection of 4.1Mbps, through this I want to use my printer get connected to my notebook too.

But its unable to connect after the reformatting of my notebook and my home PC too. 

I want to get this resolved ASAP.