Well... you'll be needing lots of .pk or .pxl files2 on your harddisc which take up a couple of MB and some time to create3. You'll also have to get to grips with 
to a certain
extent in order to be able to create those fonts. So if all you do is print the odd DVI
page every now and then you're probably better off printing everything as graphics the way
the standard printer drivers do. If you're printing more than that you should definitely
consider using this driver. If you're printing a lot there's practically no alternative ;-).