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).