Create a table with one row, and 2 columns. Place your name in the 1st cell, and left-justify. Place your phone number in the 2nd cell and right justify. Select the table and make all lines white.
The advantage of this method is that you can now change the content or the formatting without losing the left/right justification. So, you can change the font, the text size, play with brackets in the phone number, and you it will stay properly aligned for you.
Naturally, you can add rows and columns if you have more content, and each cell can be individually formatted. Add a middle cell with centre alignment for a web-address, for example.
cheers
Hollerz beat me to it.... dang..... But it's still good advice.....