Vcs extension is related to vCalendar calendar record. You can try to open vcs files with Microsoft Outlook software.

These are date files which saved by vCalendar calendar software. This file includes the dates of things to do. Besides, the informations that found in vcs files can be taken by the several softwares import option. 

Some of these softwares: Microsoft Outlook , Apple iCal and Palm Desktop which found in cell phones. 

What to use VCS

Microsoft Outlook

which page related to VCS file

VCS Related Searches

You can check related links about VCS fileextension.