Hi Al-Shakankiery,
Generally yes, but the Wizards from Office 2003 are no longer included in most cases and may not run.
If you have code in a macro that uses features no longer in Office 2007 you'd need to revisit those parts.
============Can My Templates From My Office 2003 Be Used In Office 2007?>>
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Bob Buckland ?

MS Office System Products MVP
*Courtesy is not expensive and can pay big dividends*