Is there an adapter or way to convert and LCD to DVI if it only has an analog input?
I don't think so - but some LCD monitors come with a DVI input (the much discussed Dell 20.1 FP does, for example).
I just got a new system and a free 19" monitor in one of those Dell deals and this monitor has only the analog input. While I'm sure it's much better with a DVI input
I don't see any problem with the video quality or any issues that would lead me to believe I won't be happy with this monitor. That said, when I upgrade monitors, I will definitely be looking for DVI.