Additional feature of social-networking giant. Does this button should be present in every webpage of facebook?

Hi,

I want to create a multi-chat UDP that can run in UNIX or Mac OSX systems. Can you provide me an advice on how it can be done? Or at least an overview of my goals and what I are the pros and cons of my goals. Thanks in advance.

UK Wireless provider O2’s 4G LTE test showing a great result of speeds as high as 150Mbps and an average of 20-50Mbps. Can we expect to get this facility in this year?

I'm setting up my own network security for my own home server. I want to know what things I would need to do in order to improve network security. My questions are:

Do I need to care about DDOS attacks even when the site is new?

Should I encrypt my website or leave it be? I don't require readers to log-in to my site nor have a shopping cart.

Any other advice?

I have about 3000 articles in my Joomla 2.5 that I need to transfer to Drupal 7. How can I achieve that? I tried using Joomla import modules, and feeds but it just don't work. Are there easy methods to do it? Like a one-click approach?

In our small company we have a two small servers, which serving the machine name: dot1.get.com. We cannot reach the DNS server of the domain – get.com. We don't have access to this server.

Can we add another subdomain dot2.get.bg only by modifying these two DNS servers?

Can you suggest me a open source SMTP server?

The server should be available for Windows and support SSL.

Also should be PHP and ASP.NET based. 

I have a small company with a few computers, which I want to connect together in a network. For that I have Apple Internet Router. How to setup and connect that router with the other computers ?

I need a content management system for Java platform, which supports MySQL 5.0 and Oracle 10g. Can you give me a suggestion?

I have a thousands of pictures with high resolution and for that I need a shared storage of computer files. My computer is with Ubuntu and this home file server must be accessible by Linux. Other requirement is to have access to my remote files, over the network. Can you give me a suggestion?