BTW, from the way you worded your post, it sounds like you want to use a DVI monitor with a VGA output. So you really need a VGA to DVI converter. Here is an example of such a device:
Doesn't make any sense to buy one when you can get virtually any graphics card available for that price. All the high end cards have DVI-I/DVI-D ports these days.
Opteron firstname.lastname@example.orgGHz (stock HS/fan), Asus A8N-SLI SE (passive NB), 1.5GB RAM (2:3:2:5, 2T), WD Raptor 740GD 74GB, Maxtor DM10 300GB, Asus EN7600GT SILENT@???, M-Audio Revo 7.1, Nebula DigiTV, Dell 2005FPW, Enermax 431W Active.