In short, yes. NTP components are supported on the Windows Server OS.
A few articles you'll want to review though:
http://www.symantec.com/docs/TECH92440
http://www.symantec.com/docs/TECH95347
If you can, test in a non-prod environment first. If you have higher bandwidth servers, you'll also want to take a look at those to see if it will be feasible and not affect performance.