Windows 2000 w/ service pack 4
Windows XP w/ service pack 2
Windows Server 2003
Windows Vista

Daylight Savings Time Patch Updates

Windows 95, 98 & ME Update
Windows NT, 2000 & XP sp1 Update
Windows XP sp2 Update
Windows 2003 Server Update
MS Exchange 2003 Server Update

MS Office Outlook DST Update
      *** requires Windows XP sp2 to run

For Mobile Windows Devices (PDA):

 Microsoft Active Sync 4.5 (install first)
Windows Mobile (Pocket PC) Update
      or HP IPAQ UPDATE LINK

PALM Devices (PDA)

*** If you are using the 64 bit version of a Windows Operating System, please contact John Wheeler at Digital Cowboy Computers to obtain the proper patch for your system.  The patches listed on the left are for the 32 bit versions of Windows (which is 95% of all people currently use). ***

XP sp2 = Windows XP w/ Service Pack 2

Check which version you have by RIGHT Clicking on MY COMPUTER and selecting PROPERTIES.  The box says which service pack you have.