You can play VCDs with Windows Media Player, insert the VCD in your CD-ROM or DVD-ROM and browse to the MPEGAV folder and double click on the .dat file and associate it with Media Player and open them with that.
To play a VCD with menus and still
pictures use WinDVD or PowerDVD, insert the VCD and just hit Play.
Use a low resolution, like 640x480, on the monitor when watching a VCD
to get best quality.