If you want to stop a VMware Client from synchronizing time, you can add this lines on your vmware ".vmx" config file.
I've added these settings to the .vmx file:
rtc.startTime = "1407135258"
tools.syncTime = "FALSE"
time.synchronize.continue ="FALSE"
time.synchronize.restore = "FALSE"
time.synchronize.resume.disk = "FALSE"
time.synchronize.resume.memory = "FALSE"
time.synchronize.shrink = "FALSE"
time.synchronize.tools.startup = "FALSE"