In Word, you can easily save words or phrases as abbreviations, using AutoCorrect. To add an entry that expands your name using your initials:
1. Click the File tab and choose Options, then choose Proofing.
2. Click AutoCorrect Options
3, In the Replace box, type your initials (If your initials spell a word, substitute X for your middle initial).
4. In the With box enter your name as you'd like it to appear.
5. Click Add to add the entry, then OK to close the box.
To use this entry simply type your intials (as entered above) and press the space bar or the tab key. Word will substitute your name.