Hi I can't open attachments from office 2007 when I have office 2003

That correct. Office 2007 has new formats that previous versions cannot open (ex: docx)

Use this to fix your problem: Download details: Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats (http://www.microsoft.com/downloads/details.aspx?FamilyId=941b3470-3ae9-4aee-8f43-c6bb74cd1466&displaylang=en)