DDE and 2 excel woccurances in seperate windows
 

I am trying to set a vista machine up to display 2 occurances of Excel in 2
seperate windows. I can do this by unchecking the DDE option in Excel
option, but then I get an error message that the filecannot be found try
checing the path ......etc etc etc. Excel opens and I can go to recent open
files and open my spreadsheet form there but cannot open it from the file
itself or any shortcut.

If I replace the DDE checkmark, all is well again, but I cannot open 2
occurances of excel.

If I go to the data tab adn under connections to try adn edit the links, it
is greyed out.

Any ideas to open my spreadsheets on 2 diff monitors in Vista?