Make your Arabic typing a little bit easier by using this free internet tool.

http://www.readverse.com/Get_note

You can use it to type Arabic. Also, you can email what you type intact to 5 recipients at no cost.  There is no need to either download or install a software.

yamli.com (Write Arabic without an Arabic KeyboardWrite Arabic without an Arabic Keyboard; Winner of the Best Web Technology, 2008 Pan Arab Web Awards in April 26, 2008).
–A web-based transliteration tool that can convert Arabic words typed in Latin script into ones written in Arabic letters.   Using Yamli’s Smart Arabic Keyboard is very easy. Simply spell out each Arabic word the way you would pronounce it, and Yamli will convert it to the corresponding Arabic word in real-time. (See also:  Arabic editor)