1. a- A computer worm is a standalone malware computer program that replicates itself in order to spread to other computers.
   b- A Trojan horse, or Trojan, in computing is a generally non-self-replicating type of malware program containing malicious code that, when executed, carries out actions determined by the nature of the Trojan, typically causing loss or theft of data, and possible system harm.
   c- Spyware is software that aids in gathering information about a person or organization without their knowledge and that may send such information to another entity without the consumer's consent, or that asserts control over a computer without the consumer's knowledge.
   d-  Rogue security software is a form of Internet fraud using computer malware that deceives or misleads users into paying money for fake or simulated removal of malware.
2. E-Mail Attachments: Email attachments are the most common way that ill intentioned people transmit viruses in order to infect computer users.
   Internet Downloads: Any material downloaded from the Internet, whether they are programs, documents, music files, video files and compressed files etc. could potentially contain a virus.
3. A common symptom of a virus is much slower than normal computer performance. Some viruses can cause damage to Windows or some of your programs. The results of this damage might include messages appearing unexpectedly, programs starting or closing automatically, or Windows shutting down suddenly.
4. Install an antivirus software. Don't open email attachments unless your expecting them. Keep your computer updated.
5. An e-mail virus is a harmful computer code which is usually sent as an e-mail note attachment. It becomes harmful if it is activated and may lead to the loss of information or data stored in the computer hard disk.
6.  Some people that create computer viruses do it out of meanness to get even, others create in order to make and sell antivirus software while others create them just as a challenge.
7. Clam win. AVG Free. Antivipersonal9.

Here is a collage that I made with Picasa. First I chose these photos and uploaded them to picasa. Then I selected a background and set all the other pictures how I wanted them, by zooming them and twisting them. And finally I saved my picture and uploaded it to blogger!

This is a photo that I edited using ribbet. First I cropped the original photo to make it smaller. Next I put a frame around the outside of the picture to make it look a lot more awesome. After adding a frame to the picture I dimmed the border. And finally I shined up the color on the photo using Boost!