To type the consonants, you can use a standard keyboard. It is possible to type the accents on the vowels in Microsoft Office Word 2007; however, it is time-consuming. The accents can be typed by using the symbol function.
Step 1: Type the vowel that needs the accent. Make certain that the cursor is behind the vowel that needs the accent.
Step 2: Click on the Insert tab on the tool bar.
Step 3: Click on the Symbol button on the right-hand side. It looks like an upside-down horseshoe.
Step 4: The symbol dialogue box will appear. It will have two tabs. They will say Symbols and Special Characters.
Step 5: On the Symbols page there is a drop down menu under font. Select VNI-Times.
Step 6: Choose the correct accent and click the insert button at the bottom of the box. The accent will appear over the vowel in the text.
If you want to type Vietnamese easily, You can download the Vietnamese-type software. The best one is Unikey. Almost people in Vietnamese use this software to type Vietnamese. You can download here : http://www.unikey.org/
And you can choose Unicode font, so you must not install any font to type Vietnamese correctly.