I wanted to know how can i turn my 6509 switch into an NTP Sever for my network because all the time is off on all the gear that we have right now.
I'm with Jon. Thus my initial response of "I wouldn't configure Cisco appliance as an authoritative NTP server."
Sure, all of your switches can get their time sync on your 6500 but you don't have to configure "ntp master" to it. Just point your switches to it using the command "ntp server [prefer]".
The reason why I don't recommend a Cisco appliance as an authoritative NTP/SNTP server is because the clock chip is similar to a PC. It doesn't have a dedicated method of verifying. You can, however, let your 6500 synchronize it's own clock with something that is authoritative. You can get a cheap NTP server that uses GPS (best method so far). Another option is to open a port in the firewall to allow the 6500 to talk to world-wide NTP pool.