How to access a PC that records my CCTV from other PC’s in the office.

I have a computer (win XP pro) that records my CCTV cameras, but I want to be able to basically have remote desktop like access to the computer that the cameras are connected to from several computers (XP pro and win 7) around my office, so that employee(s) can monitor the cameras during lunch, or if working after hours. Any suggestions are appropriated.