When I try and open some of my Excel files, I get a message that Excel is unable to find the files; strangely, it has no problem finding and opening other files. This phenomenon is not limited to one folder. However, these same unfindable files are found and opened with a copy of Open Office or if I open those spreadsheets at the Zoho site. I am using a AMD 64x2 Mobile Processor on a Gateway Laptop w/2 MB RAM & Windows XP Media Center, SP-2. I am using Microsoft Office 2003 SP-3. I have not tried unloading and relaoading Office yet. In the Options submenu of Excel and under the General Tab, "Ignore Other Applications is Unchecked".