How can I connect a DVI monitor to the VGA port in my laptop?

Solution 1:

You may find that a USB-to-DVI video adapter costs less than either a new monitor or a full-on VGA-DVI converter.

ex: http://www.amazon.com/Diamond-BVU195-Display-Adapter-included/dp/B002GHBW4S/ref=sr_1_1?ie=UTF8&s=electronics&qid=1271951907&sr=8-1

This works best if you are using the laptop's external display primarily for office work, web browsing, or other non-intensive graphics applications. I would not recommend it for 3-D gaming or for watching movies.

Solution 2:

There are, but they are quite pricey. For example:

VGA to DVI Converter/Scaler

VGA / HDtv To Dvi-i Scaler / Converter

VGA to DVI Converter

A simple VGA<->DVI adapter will work the other way (DVI output to VGA display).