Windows fonts normally have information stored with the font that identifies the type of font (serif, sans-serif, etc), whether it is bold, italic, and other attributes of the font. Where this information is available Windows also provides a means by which you can locate other similar fonts that you have installed on your computer.
To locate similar fonts you first need to open the font folder. One way to do this is to select Start then Settings, then Control Panel and then double click on Fonts.
The next step is to open the View menu and select List Fonts By Similarity.
You then simply select the font from the drop down list that you want and the fonts listed at the bottom of the window will then be listed based on how similar that they are to the one selected.
This article written by Stephen Chapman, Felgall Pty Ltd.