Upgrading to Office 2004 from Office X necessary?



I am currently using Office X (v.10.1.6) on my G4 PowerMac ( the only
mac in the office). The PC's in the office are being upgraded to
Microsoft Office 2003. Will I have to upgrade my mac to Office 2004 or
will I still be able to read and edit any Word, Excel or Powerpoint
files I receive from any of the PC's with my existing Office X?

thanks for the help!

ELL

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