Excel For Mac 2011 Opens Files Not In Folders On Launching

Sometimes when I open an existing (or E-mail attached) Excel file it opens as a 'window' but is outside of the area veiwed on screen. If I 'Maximize' the sheet, I can then see the workbook on screen, but if I reduce to a window, it goes back off screen. The basic way to open a file on the Mac — and on Windows as well — is to double-click a file. By default, it opens with the application that is assigned to work with its file type; so, if you have Microsoft Office on your Mac, a.doc file opens in Word, and an.xls file opens in Excel. B-E see the file in the folder via a web browser BUT when they try to open it, it opens in Excel online. They need to open it with the desktop version of Excel because of all the fancy formatting. Since B-E do not have O365 logins, they do not get the button in Excel online that says 'Open with Excel' which would then open that file in the. Use one of the following methods to prevent files from automatically opening when you start Excel. Remove files from the XLStart folder and the alternative startup folders To remove files from the XLStart folder and the alternative startup folders, follow these steps: Select Start, and then select Run.

File Server: Windows Small Business Server 2003 (Standard Edition)
Workstations: Windows Vista Professional/Windows 7 Professional/Windows XP Professional
(All workstations are using Office XP 2003 Professional)
Greetings,
I have been perplexed by an issue that came up at the same time I started using OpenOffice 3.3.0. Due to the constraints of opening spreadsheets with more than 66K lines of data in Excel 2003 (which ultimately needed to be imported into a table in Access 2003), I installed OpenOffice. It worked great. All I did was open the .xlsx spreadsheet within Calc and save it as a .csv to a shared server file (mapped drive). I was then able to import the .csv into a table in Access and go on with life.
At the same time I started using Calc, other users on the network complained that some Excel files on the server would no longer open. I was dismissing this as mere coincidence, but now I am not so sure. Is it possible that OpenOffice Calc tags something in the server registry that might cause this? My research results are below:
1) Excel files on a mapped drive to the server will not open. Excel will launch and act as though it is opening the file, but ultimately never does. The size of the file does not seem to matter. Excel for mac 2011 opens files not in folders on launching

2) Calc will open the same file from the same location that Excel could not open with no delay.
3) If you copy the Excel file from the server to the local workstation, it opens right up in Excel with no delay whatsoever.
4) Other Excel files on the same server directory open up right away within Excel, but I cannot pinpoint (because I do not remember) if these are the same files I had originally modified with Calc.
5) It does not matter if the workstation has OpenOffice installed or not.
6) It does not matter what OS the workstation is running.
7) I have checked the File Options to ensure that Excel is the default startup application.
Any ideas?
Kind regards,

Excel For Mac 2011 Opens Files Not In Folders On Launching

Paul