An acquaintance recently purchased a Samsung SyncMasterT190 19" LCD monitor to replace a 5 year old CTX 15" LCD. Since setup, he has noticed a slight distortion in picture/text quality that wasn't present with the smaller screen. He has an NVIDIA GeForce 8500 GT video card and hasdownloaded the latest driver from their site. No improvement.
I don't believe buying a DVI cable would help with this problem. He is currently in analog mode.