Does anyone know how to use proxy servers to get past a parental blocking site for Second life?

whoever put the K9 web protection on your machine will have the password to either uninstall it or create an exception for 2nd life. otherwise you will not be able to play the game.

Select Turn Parental Control OFF, Turn Parental
Control ON and ALLOW computers access to
ONLY these sites, or Turn Parental Control ON
and DENY computers access to ONLY these
sites.
Enter the keywords or URLs that you want to
block (or allow). Any URL with the keyword (facebook) in
it will be blocked.
The schedule of time when the parental control
filter will be enabled. The schedule may be set
to Always, which will allow the particular service
to always be enabled. You can create your
own times in the Maintenance > Schedules
section.

Why can't I view some websites?
Applies to Windows 7
If you can access some websites but not all of them, here are some possible causes:

• Your browser could be attempting to connect through a proxy server. If so, try connecting with the proxy server turned off.
  
• Your browser connection settings could be incorrect. To change connection settings, follow these steps:
  
  1. Open Internet Options by clicking the Start button , clicking Control Panel, clicking Network and Internet, and then clicking Internet Options.
     
  2. Click the Connections tab.
     
  
  
• Your router could be attempting to proxy DNS requests and failing. Refer to the documentation that came with your router for instructions on disabling DNS proxying.
  
• Parental Controls, Family Safety, or some other parental control software could be blocking access to certain websites.
  

tools>internet options>connections>lan settings, uncheck use a proxy server or check parental controls under internet options

If you are unable to open facebook and it is blocked, You ca use proxy site http://www.securitales.com to open it.

it says that the web page is blocked by the proxy server that is monitoring this connection...it is like firewall or any parental control software or the category "downloads" is blocked by the server...

Hi liverpool97.
Let me explain you about the Proxy servers.
In Computer Networks, a Proxy Server is a Server (a Computer system or an application program) that acts as an intermediary for requests from clients seeking resources from other servers.
A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server.
The proxy server evaluates the request according to its filtering rules.
For example, it may filter traffic by IP address or protocol. If the request is validated by the filter, the proxy provides the resource by connecting to the relevant server and requesting the service on behalf of the client.
A proxy server may optionally alter the client's request or the server's response, and sometimes it may serve the request without contacting the specified server.
In this case, it 'caches' responses from the remote server, and returns subsequent requests for the same content directly.
Hope this helps.
Please let me know if you need further information about the Proxy servers.
I'll be glad to assist you.

In computer networks, a proxy server is a server (a computer system or an application program) that acts as an intermediary for requests from clients seeking resources from other servers. A client connects to the proxy server, requesting some service, such as a file, connection, web page, or other resource, available from a different server. The proxy server evaluates the request according to its filtering rules. For example, it may filter traffic by IP address or protocol. If the request is validated by the filter, the proxy provides the resource by connecting to the relevant server and requesting the service on behalf of the client. A proxy server may optionally alter the client's request or the server's response, and sometimes it may serve the request without contacting the specified server. In this case, it 'caches' responses from the remote server, and returns subsequent requests for the same content directly.
A proxy server has a large variety of potential purposes, including:
1: To keep machines behind it anonymous (mainly for security.
2: To speed up access to resources (using caching). Web proxies are commonly used to cache web pages from a web server.
3: To apply access policy to network services or content, e.g. to block undesired sites
4: To log / audit usage, i.e. to provide company employee Internet usage reporting
5: To bypass security/ parental controls

You'll very rarely find Proxy/unblockers sites that are unblocked.
If you find a website that's meant to be blocked, but isn't blocked yet, it'll soon be blocked!
A few months ago, my friends found a website that'll let you go on any website, Facebook, Myspace, & Redtube, but within a week of the website being constantly used, it was eventually blocked! :(

What you need is a teacher's net account, or a tafe account.