Wasn't there an issue not long ago about the use of computer monitors as TVs to circumvent TV licensing or something, so the manfrs had to delete the SCART / phono inputs to "prove" that they weren't TVs?
Sorry if that's a red herring, but all the PC LCD monitors I've come across recently have either DVI or VGA (usually both), but I've not seen a Scart or Phono input.
Also, I have never seen a converter from SCART or Left/Right/Video phono to either DVI, VGA D-Dub or HDMI - particularly as neither VGA nor DVI support the audio input / output.
As The Flying Pram says, you can get a TV to act as a PC monitor, but you pay £100 more for the same or lower resolution as an LCD monitor.
SD