WTM on XPpro and SBS2003

Hello all,

Time is the problem of the day. In the Event logs of all my clients I'm getting; {see below} W32TIME Error. Now according to MSKB

http://support.microsoft.com/default.aspx?scid=kb;en-us;842199
http://support.microsoft.com/default.aspx?scid=kb;en-us;832261

One tells me to change TIME UPDATE TO INTERNET. When I try it on the client box it's unable "firewall right" when I try it on the SBS2003 I get The RPC server is unavailable.

IS this a group policy thing??

Any Ideas my friends??
Thanks MPC458

Event Type: Error
Event Source: W32Time
Event Category: None
Event ID: 29
Date: 10/7/2004
Time: 9:59:36 AM
User: N/A
Computer: MARKETING1
Description:
The time provider NtpClient is configured to acquire time from one or more time sources, however none of the sources are currently accessible. No attempt to contact a source will be made for 15 minutes. NtpClient has no source of accurate time.

For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp.