How do I share files on a wireless network? Wi-Fi Problem Fixs

You will need to set up a workgroup and make sure that all PCs are assigned to the same workgroup, then enable file sharing in Windows. First, right-click on the folder you want to share, choose Sharing and Security from the right-click menu, then click the Sharing tab. Put checks in the boxes labeled "Share this folder on a network" and "Allow network users to change my files" to enable others to modify the documents. Now just, click OK.

Which wireless channel should I use? Wi-Fi Tips and Tricks

Wireless 802.11b and 802.11g routers have 11 channels in the United States and 13 in Europe, and most routers come set to channel 6 as the default. If you experience interference—from a neighbor's router, for instance—you can change your channel to solve the problem. Channels 1, 6, and 11 are non-overlapping channels. So if your neighbor's network uses channel 6, change your router to 1 or 11. You'll typically find channel settings on the router's basic wireless-settings page. Just click the drop-down menu and select an alternate channel, then save the settings.

How do I extend the range of my wireless signal? Wi Fi Problem Solvers

Improving a wireless signal is part trial and error. No two homes are alike, and no two solutions will work for everyone, but here are some common guidelines. First, position your antenna on a high perch clear of obstructions. (The wireless signal radiates down.) Keep in mind that certain things will interfere with the signal: metal, and dense building materials such as brick, stucco, and concrete. So avoid metal pipes and construction.

If changing your Wi-Fi antenna positioning doesn't help, you can get an extender (or "repeater"), such as the Linksys Wireless-G Range Expander WRE54G, available for around $90. Devices like this will boost your range from 50 to 75 feet, A somewhat easier approach is Wireless Garden's Super Cantenna. This $39.95 tripod-mounted, high-gain antenna connects to your router and can be pointed at a specific area to amplify the signal.

How To Get Secure Internet access in a public hotspot

Wireless transmissions on a public hot spot are typically unencrypted, and thus exposed to snooping. All computers on a public hot spot are typically exposed to each other, and thus vulnerable to network attacks.

Use a software firewall
A good software "firewall" will protect your computer from network attacks.

Make sure you are using strong passwords on all system accounts (including Administrator) and on all user accounts.

When Using Microsoft Windows

Use Simple File Sharing (Windows XP only); or
Make sure that all network shares are secured with strong passwords (all versions of Windows). Use Control Panel, Administrative Tools, Computer Management, Shared Folders, Shares to review and check Properties of all network shares

Improving Wi-Fi Why high transmit power will tend to increase your interference with other Wi-Fi users, making you a bad neighbor

Higher Power WI-FI

Will having higher power Wi-Fi help improve your range, no, since higher power only helps on transmit, not receive. Thus it's only likely to help if the other end of your connection is using higher power as well, which is often not the case. Also, unnecessarily high transmit power will tend to increase your interference with other Wi-Fi users, making you a bad neighbor. It's usually much better to just improve your antenna, which helps both transmit and receive.